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Mombasa in August: Weather, Average temperature and Climate

Take a look at past year’s weather for Mombasa in August and see if it is worth visiting.
Check flight prices to Mombasa on Avionero:
August

Weather in Mombasa in August 2025

OK Weather
Warm
🌧️
Rainy
🌊
Warm water
Mombasa in August usually sees fair weather conditions, with an average daily high temperature of +27°C and roughly 0 sunny days. However, you should prepare for about 29 rainy days with an average precipitation of 65 mm. The weather is changeable so pack for every eventuality. Search flights in one click on Avionero.

Average weather

☀️
+27°C
Avg. max. temperature
+20°C
Min.
+30°C
Max.
65 mm
Total precipitation
81%
Avg. humidity
3 m/s
Avg. wind
0 ☀️
Sunny Days
2 ⛅️
Cloudy
29 🌦
Rainy
Our opinion: Mombasa has OK weather in August.

Average temperature in Mombasa in August

Here are the expected maximum, average and minimum temperatures in Mombasa for August based on the historical data.
Last Year
Historical Data

The temperature in August is +28°C on average, with a range between a maximum of +30°C during the day and a minimum of +23°C at night.

The average maximum temperature goes up 0% by the end of the month, compared with the beginning of the month, from +28°C to +28°C.

Is Mombasa warm or cold in August?

Mombasa is typically warm in August.

Maximum temperatures go up compared to the previous month from +27°C to +27°C. The minimum temperature also goes down from +23°C to +22°C.

It’s generally warm, but pack a long-sleeve shirt for evenings.

August is one of the coolest months in Mombasa, here is the comparison with other months:

Water temperature in Mombasa in August

Water in Mombasa in August is Warm. It varies from +25°C to +26°C, with an average of +25°C. This is almost similar to the air temperature, which averages +27°C.

The water temperature in August is one of the coldest of the entire year:

The warmest water temperatures in Mombasa are reached in April, when the average sea temperature rises to +29°C. The coldest water temperatures are in August, with an average of +25°C.

Can you swim in Mombasa in August?

You can absolutely swim in Mombasa in August, the water is warm (+25°C in average), similar to heated pools. Suitable for most people, including children and the elderly.
🦭
Cold
Below +16°C
🏄‍♂️
Fresh
16°C - 21°C
🏊
Comfortable
21°C - 25°C
👙
Warm
25°C - 28°C
🔥
Very warm
+28°C and up
Bring your swimming suit, sunscreen and your favorite inflatable pink flamingo.

Climate in Mombasa in August

Mombasa weather looks like this, on average, in August and the surrounding months.
JulyAugustSeptember
Avg. temperature
+27°C+27°C+28°C
Min. temperature
+20°C+20°C+20°C
Max. temperature
+30°C+30°C+30°C
Rainfall
77 mm65 mm54 mm
Wind
3 m/s3 m/s3 m/s
Avg. water temperature
+26°C+25°C+26°C
Humidity
81%81%80%
Air pressure
1016 HPa1015 HPa1014 HPa
Sunny days
001
Cloudy days
222
Rainy days
292927
Snowy days
000

August weather is still as ok as in July. The temperature levels stay the same in the area of +27°C for average maximum temperature during the day. As August arrives, the amount of rainfall goes down. On average, the rainfall volume decreases from 77 mm to 65 mm. Humidity levels don’t change as the month goes on, averaging around 81%. The average wind speed doesn’t change much during August, staying around 3 m/s. The amount of sunny days stay about the same, averaging 0 sunny days during the month.

September brings much the same weather, it remains ok.

Wind

Wind speed in Mombasa in August based on historical data.
Last Year
Historical Data

The average wind speed is 4 m/s getting up to 6 m/s which is a medium breeze. You can feel it, especially getting out of the water.

The average wind speed in Mombasa is gradually increasing during August, going from 4 m/s to 4 m/s over the course of the month.

Rain

Amount of rainfall in mm during August in Mombasa based on historical data.
Last Year
Historical Data
A chance of rain on a typical day in August stands at 68%, leading to total precipitation of around 48 mm. The maximum amount of rainfall per day is around 7 mm, which is considered light rain. August is a pretty wet month with over 21 rainy days, so don’t forget to pack an umbrella, raincoat, and a pair of galoshes.
Here’s how August is compared with other months in the amount of precipitation, total mm:
Mombasa wettest month is May, where a typical day has a 87% chance of precipitation and 203 mm of rainfall per day. February, on the other hand, is the driest month with a mere 41% chance of precipitation and 15 mm of rainfall per day.

How was the weather last August in Mombasa?

This is the weather in Mombasa in August 2023:
1 August
🌧️
+28°C
2 August
🌧️
+27°C
3 August
🌧️
+25°C
4 August
🌧️
+28°C
5 August
🌧️
+28°C
6 August
🌧️
+28°C
7 August
🌧️
+28°C
8 August
☀️
+28°C
9 August
☁️
+27°C
10 August
☁️
+28°C
11 August
☀️
+28°C
12 August
☀️
+27°C
13 August
☀️
+29°C
14 August
🌧️
+29°C
15 August
🌧️
+27°C
16 August
☀️
+28°C
17 August
🌧️
+28°C
18 August
☀️
+29°C
19 August
☀️
+29°C
20 August
☀️
+29°C
21 August
🌧️
+29°C
22 August
☀️
+29°C
23 August
☁️
+29°C
24 August
☀️
+29°C
25 August
☀️
+28°C
26 August
☀️
+29°C
27 August
☀️
+30°C
28 August
🌧️
+28°C
29 August
🌧️
+26°C
30 August
🌧️
+28°C
31 August
☀️
+28°C
In August 2023 Mombasa had 14 sunny days, 3 cloudy days, and 14 rainy days. The average maximum temperature was +28°C, with an absolute maximum of +30°C and a minimum of +25°C. The average humidity was 82%, with a maximum of 93% and a minimum of 65%. The average wind speed was 4 m/s, with a maximum of 9 m/s and a minimum of 1 m/s.
Are you planning a trip in August?

Climate Change over Years

This is how Mombasa climate have been changing during last 43 years period.

The climate in Mombasa in August has not changed much over the last 43 years.

The average temperature was the lowest in 1979 (+29°C) and the highest in 2023 (+30°C). The driest year was 2021 with only 554 mm of rainfall, and the wettest year was 2019 with 1484 mm.

FAQ

Frequently asked questions about the weather in Mombasa in August:

Is August a good time to visit Mombasa?

It’s always a good time to visit Mombasa, but the weather is changeable in August, so plan a mix of indoor and outdoor activities and exploring, and pack for every eventuality.

Can you sunbathe in Mombasa in August?

August is warm in Mombasa. You may enjoy some beach or pool time in the day, but pack something a tad warmer for the evening.

Can you swim in Mombasa in August?

Yes, you can swim in Mombasa in August, the water temperature averaging at +25°C. This temperature is considered warm and comfortable for most swimmers.

Is Mombasa rainy in August?

Mombasa is often rainy in August. You may get a bit damp when outside, so pack an umbrella, and maybe even a raincoat.

Is it sunny in Mombasa in August?

Usually, it’s not very sunny in Mombasa in August, often it’s pretty cloudy. Pack for any eventuality; layering can help reduce the number of bulky items needed.

Other cities in Kenya

Check out the weather for other cities in Kenya.

Monthly weather in Mombasa

Source of the data

For this page, we’ve looked at the typical weather in Mombasa, based on historical hourly weather data from January 1, 1979, to December 31, 2023.

For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.