UV index for Mombasa peaks at UV 11 at 12:00 local time. Data as of (Africa/Nairobi). Values update hourly — see this page for the current reading and hourly forecast.

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UV Index in Mombasa

Live UV index for Mombasa, Kenya — current level, hourly UV forecast, peak times, WHO sun protection advice and a 4-day outlook. Now: UV 11 (Extreme). Peak today: UV 11 at 12:00.

Now · 11:00 · Mombasa
11
Extreme
0–2Low3–5Moderate6–7High8–10Very High11+Extreme

Sun protection needed today: 09:00–16:00

Protection guidelines:

Now · 11:00 — UV 11 · Extreme · Clear sky: 12

  • Avoid being outside during midday hours
  • Make sure you seek shade
  • Shirt, broad-spectrum sunscreen and hat are a must
Values are forecasts from the European CAMS model (Copernicus), not measurements from a sensor in Mombasa. WHO · Methodology
Today's UV overview · Fri, Oct 16
2
8Overcast26°78%4
5
9Partly cloudy28°70%4
8
10Partly cloudy29°66%5
11
11Partly cloudy29°63%5
11
12Overcast30°61%5
10
13Partly cloudy30°61%5
8
14Partly cloudy30°62%6
5
15Partly cloudy29°65%6
2
16Partly cloudy28°68%6
1
17Partly cloudy28°73%5
% HumidityWind m/s
Max today
11at 12:00
Max tomorrow
12at 12:00
Daylight today
12h 12m06:00–18:12
Solar noon
12:06

Sun & moon in Mombasa

Sun height81°
Sun directionSE 121°
Sky stateDaylight
-90°-60°-30°0°30°60°90°00:0006:0012:0018:0024:00Now 81°

The curve traces the sun's height above the horizon through the day: 0° is the horizon, 90° is straight overhead. The higher the sun climbs, the shorter the path its rays take through the atmosphere — and the stronger the UV. The part below 0° is night.

Sunrise / sunset directionE 99° / W 261°
Civil twilight05:40–06:01 / 18:12–18:33
Nautical twilight05:15–05:40 / 18:33–18:58
Astronomical twilight04:51–05:15 / 18:58–19:22
Moon phaseWaxing crescent · 29%
Moonrise / moonset10:21 / 23:03
Next moon quarterFirst quarter · Oct 18, 19:13

Detailed hourly UV index — Today, Oct 16

Peak UV 11.2 at 12:00 · Mombasa · Local time (GMT+3)

The solid line is the hourly UV forecast: the UV index expected each hour, with cloud cover taken into account. The dashed line is the clear-sky UV, the level it would reach under a cloudless sky. The gap between the two lines shows how much the clouds are lowering the UV.

04812Max: 11Now: 116:0024°9:0028°12:0030°15:0029°18:0026°21:0026°
ForecastClear sky

Detailed hourly UV index — Tomorrow, Oct 17

Peak UV 11.6 at 12:00 · Mombasa · Local time (GMT+3)

04812Max: 126:0024°9:0027°12:0030°15:0030°18:0027°21:0026°
ForecastClear sky
Hour-by-hour UV index for today & tomorrow

Detailed hour-by-hour UV index forecast for Mombasa — today and tomorrow. Includes UV level, clear-sky UV, weather conditions, and temperature for each hour.

Today — Oct 16

HourUVClear skyWeather
05:000.0 – Low0.0Partly cloudy24°
06:000.0 – Low0.0Partly cloudy24°
07:000.5 – Low0.6Partly cloudy25°
08:002.0 – Low2.3Overcast26°
09:004.6 – Moderate5.5Partly cloudy28°
10:007.9 – Very High9.1Partly cloudy29°
11:0010.7 – Extreme12.0Partly cloudy29°
12:0011.2 – Extreme13.1Overcast30°
13:0010.5 – Very High12.1Partly cloudy30°
14:008.3 – Very High9.2Partly cloudy30°
15:005.1 – Moderate5.5Partly cloudy29°
16:002.2 – Low2.4Partly cloudy28°
17:000.5 – Low0.6Partly cloudy28°
18:000.0 – Low0.0Partly cloudy26°
19:000.0 – Low0.0Partly cloudy26°
20:000.0 – Low0.0Partly cloudy26°
21:000.0 – Low0.0Partly cloudy26°

Tomorrow — Oct 17

HourUVClear skyWeather
05:000.0 – Low0.0Partly cloudy25°
06:000.0 – Low0.0Partly cloudy24°
07:000.5 – Low0.6Partly cloudy25°
08:002.0 – Low2.4Partly cloudy26°
09:004.9 – Moderate5.5Partly cloudy27°
10:008.3 – Very High9.1Overcast28°
11:0011.0 – Extreme12.1Overcast29°
12:0011.6 – Extreme13.2Overcast30°
13:0010.8 – Extreme12.1Overcast31°
14:008.7 – Very High9.1Overcast31°
15:005.4 – Moderate5.5Partly cloudy30°
16:002.3 – Low2.3Partly cloudy29°
17:000.5 – Low0.6Partly cloudy28°
18:000.0 – Low0.0Partly cloudy27°
19:000.0 – Low0.0Partly cloudy26°
20:000.0 – Low0.0Overcast26°
21:000.0 – Low0.0Overcast26°

4-Day UV Forecast for Mombasa

The 4-day UV index forecast shows each day's peak UV and the time it's reached, plus daily high and low temperatures and an hourly UV curve, so you can plan sun protection for the days ahead.

Today, Oct 16Peak UV 11 at 12:00Sun protection: 09:00–16:0030° / 24°
6Partly cloudy24°9Partly cloudy28°12Overcast30°15Partly cloudy29°18Partly cloudy26°
Saturday, Oct 17Peak UV 12 at 12:00Sun protection: 09:00–16:0031° / 24°
6Partly cloudy24°9Partly cloudy27°12Overcast30°15Partly cloudy30°18Partly cloudy27°
Sunday, Oct 18Peak UV 12 at 12:00Sun protection: 09:00–16:0031° / 24°
6Partly cloudy24°9Partly cloudy28°12Partly cloudy31°15Mainly clear31°18Partly cloudy27°
Monday, Oct 19Peak UV 13 at 12:00Sun protection: 09:00–16:0033° / 25°
6Partly cloudy25°9Partly cloudy28°12Partly cloudy32°15Mainly clear32°18Mainly clear27°

Peak midday UV by month in Mombasa

It's October: on clear days, the midday sun here usually peaks around UV 12–14. That's very intense: around midday you need shade, covering clothes and sunscreen.

The sun is strong here all year round: even in the mildest months, midday UV reaches about 11, so protection is needed in every season. Treat these numbers as the most sun you should expect around noon: clouds typically lower the real value, while reflections from snow, sand or water can add to the UV your skin actually receives. Today's actual UV is in the forecast above.

368111412–15Jan13–15Feb13–15Mar11–14Apr10–13May9–11Jun9–11Jul10–13Aug12–14Sep12–14Oct12–14Nov12–14Dec

Each bar shows the range the midday UV index moves through on clear days in that month, from the gentlest days up to what the strongest days typically reach, based on 17 years of satellite data (2004–2020). The small light line inside a bar is an ordinary day's midday level.

Based on TEMIS data. Copyright © KNMI/ESA — https://www.temis.nl/

In October the strong sun is in the southern hemisphere: UV reaches high levels across most of it, while the northern hemisphere outside the tropics has its mild season.

See the world map for October →

The UV year at a glance

Strongest sunJan–Mar · up to 15
Weakest sunJun–Jul · up to 11
Protection needed (UV 3+)all year
Extra protection (UV 8+)all year

Months when the midday sun gets strong enough to need protection. Based on clear days; clouds typically lower UV.

See also: Mombasa temperature and rainfall by month →

UV in Mombasa: today, tomorrow and through the year

In Mombasa the UV index is right at today's peak of 11 (extreme), and protection is worth keeping on until 16:00. Clear conditions leave the sun barely filtered today.Tomorrow looks much the same, with the peak near UV 12 (extreme) around 12:00 and protection needed from 09:00 to 16:00.Few months in Mombasa are stronger than October. Its strongest days reach about UV 14, while the quietest months of the year still hold around UV 11.

Location, daylight and sky in Mombasa

Key facts

CountryKenya, Mombasa County
TimezoneAfrica/Nairobi (UTC+3)
Coordinates4.05° S, 39.66° E
Elevation26 m
Population≈ 1.21M
Air pressurebarometer.today

Sun & Daylight Hours in Mombasa

Sunrise / sunset06:00 / 18:12
Daylight today12h 12m
Daylight tomorrow12h 12m (±0 min)
Solar noon (sun highest)12:06
Golden hour17:45–18:25
Low UV hours (UV < 3)06:00–09:00
16:00–18:00
High UV window (UV ≥ 3)09:00–16:00

Seasonal daylight range at this latitude

Longest day12h 21m (Dec 21)
Shortest day11h 53m (Jun 21)

Similar daylight hours as Kinshasa, Democratic Republic of Congo — on the same parallel

UV index map for Mombasa and nearby cities

This map shows the current UV forecast for Mombasa and the area around it. One forecast value covers a region of roughly 40 km, so it is a good guide for the area as a whole rather than an exact reading for one spot. In places with big height differences, or where the ground is covered by snow, the real UV can differ from what the map shows.

Check UV in: Kiambu · Thika · Ruiru · Nairobi · Karuri

Air quality concerns? Check air quality in Mombasa on AirIndex.Today

What is the UV index in Mombasa right now?

As of 11:00 local time, the UV index in Mombasa is 11 (Extreme). UV changes hour by hour. See the hourly chart above for how it rises and falls today.

What is the UV index in Mombasa today?

On 2026-10-16, the peak UV index forecast for Mombasa is 11, expected around 12:00 local time. Check back daily: UV levels change with cloud cover, ozone, and sun angle.

What is the UV index in Mombasa tomorrow?

On 2026-10-17, the UV index in Mombasa is forecast to peak at 12 around 12:00 local time. Plan outdoor activities and sun protection around that peak.

What are typical maximum UV levels in Mombasa by month?

Peak midday UV index in Mombasa, month by month
MonthPeak midday UV
January12–15
February13–15
March13–15
April11–14
May10–13
June9–11
July9–11
August10–13
September12–14
October12–14
November12–14
December12–14
There is no real UV season in Mombasa: midday levels stay in a similar range all year, from about 11 at the quietest, in June, to about 15 in February. Month by month: January (12–15), February (13–15), March (13–15), April (11–14), May (10–13), June (9–11), July (9–11), August (10–13), September (12–14), October (12–14), November (12–14), and December (12–14).Clear-sky range, 17 years of satellite data (2004–2020). On cloudy days values are typically lower.

How strong is UV in Mombasa in October?

In a typical October, the midday UV index in Mombasa reaches 12–14 on clear days, based on 17 years of satellite data (2004–2020). Cloudy days typically run lower. Check the live forecast for today's value.

Which months have the highest UV in Mombasa?

UV in Mombasa is highest in January–March, when the midday index reaches up to 15 on clear days. The weakest sun is in June–July, around 9–11 at midday.

When do you need sun protection in Mombasa?

All year round: midday UV in Mombasa reaches 3 or higher (the WHO protection level) in every month. In every month it can reach UV 8 or more. The WHO then advises extra protection: avoid the midday sun and cover up.

Forecast · UV Index

Now
UV 10.7 (Extreme)
Max today
UV 11.2 · 12:00
Max tomorrow
UV 11.6 · 12:00
Clear sky
UV 13.1
Sunrise / Sunset
06:00 / 18:12
High UV window (UV ≥ 3)
09:00–16:00
4-Day UV Forecast
Fri 11.2 · Sat 11.6 · Sun 12.2 · Mon 13.2

UV guides

Read all guides →
About the UV Index

What is the UV index?

The UV index (UVI) is an international standard measure of the strength of ultraviolet radiation from the sun at a particular place and time. It ranges from 0 (nighttime) to 11+ (extreme). Higher values mean greater risk of sunburn, skin damage, and eye injury. The UV index was developed by the World Health Organization (WHO) to help people protect themselves from harmful UV radiation.

How do I check the UV index today?

This page shows the live UV index for your location using data from the Copernicus Atmosphere Monitoring Service (CAMS). You get the current UV level, an hourly UV forecast chart for today and tomorrow, and the exact peak UV time — so you always know when sun protection is most important.

When is UV radiation strongest?

UV radiation is typically strongest between 10:00 and 16:00, when the sun is highest in the sky. However, the exact peak time and intensity depend on your latitude, the season, altitude, cloud cover, and ozone levels. Check the UV forecast chart above to see today's exact peak time for your location.

How can I protect myself from UV radiation?

Apply broad-spectrum sunscreen, wear protective clothing and a wide-brimmed hat, seek shade during peak UV hours, and wear UV-blocking sunglasses. The WHO recommends sun protection when the UV index is 3 or above.

Where does the UV data come from?

The hourly UV index on this site comes from the Copernicus Atmosphere Monitoring Service (CAMS), operated by ECMWF on behalf of the European Union. CAMS calculates the UV biologically effective dose using total column ozone, aerosol optical depth, and cloud cover. The global forecast has a spatial resolution of approximately 40 km and provides hourly UV index values for up to 5 days ahead.

What does "clear-sky UV index" mean?

The clear-sky UV index shows how strong ultraviolet radiation would be if there were no clouds at all. It is calculated using the same atmospheric data — ozone column thickness, aerosol concentrations, and solar angle — but assumes completely cloudless conditions. Comparing the actual UV index with the clear-sky value shows how much clouds are reducing UV exposure at any given time. On overcast days, actual UV can be significantly lower than the clear-sky value.

How often is the UV forecast updated?

The CAMS global UV forecast is updated twice daily, based on model runs initialized at 00:00 and 12:00 UTC. Weather data such as temperature, cloud cover, and sunrise/sunset times is updated every 1–6 hours depending on the region, using weather models from national meteorological services via Open-Meteo. The first 1–2 days of the forecast are typically the most accurate.

What does the WHO recommend for each UV level?

Low (0–2) — No protection needed. You can safely enjoy being outside
Moderate (3–5) — Seek shade during midday hours. Wear a shirt, apply broad-spectrum sunscreen, and put on a hat. Wear UV-blocking sunglasses
High (6–7) — Seek shade during midday hours. Wear a shirt, apply broad-spectrum sunscreen, and put on a hat. Wear UV-blocking sunglasses
Very High (8–10) — Avoid being outside during midday hours. Make sure you seek shade. Shirt, broad-spectrum sunscreen and hat are a must
Extreme (11+) — Avoid being outside during midday hours. Make sure you seek shade. Shirt, broad-spectrum sunscreen and hat are a must

Source: WHO Global Solar UV Index, 2002

uvi·today

Disclaimer: This website is for informational purposes only and does not constitute medical advice, diagnosis, or treatment. UV index data and sun protection guidance are approximate and should not replace professional advice. UV index data is not applicable to infants under 12 months. The WHO recommends keeping them out of direct sunlight at all times. WHO. UV forecasts are based on satellite and atmospheric models. Actual UV levels may vary due to local cloud cover, surface reflection, altitude, and other environmental factors. When in doubt, consult a healthcare provider for personalized sun protection advice. UV and weather data is sourced from third-party APIs (Open-Meteo/CAMS). We do not guarantee accuracy or availability. Data may be delayed or temporarily unavailable.

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UV & weather data: Open-Meteo (CAMS/Copernicus) · Protection guidelines: WHO Global Solar UV Index, 2002 · Location data: GeoNames (CC BY 4.0) · IP2Location LITE · Yr / NRK (CC BY 4.0) · Twemoji (CC BY 4.0)

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