September could be a good time to visit Mombasa, as the weather is generally fine. The average high temperature is around +82°F, and there are typically 1 sunny days in September. However, expect about 27 rainy days, and total monthly rainfall of approximately 54 mm. The weather is changeable so pack for every eventuality. Search flightsin one click on Avionero.
Average weather
☀️
+82°F
Avg. max. temperature
+68°F
Min.
+86°F
Max.
54 mm
Total precipitation
80%
Avg. humidity
3 m/s
Avg. wind
1 ☀️
Sunny Days
2 ⛅️
Cloudy
27 🌦
Rainy
Our opinion: Mombasa has OK weather in September.
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Average temperature in Mombasa in September
Here are the expected maximum, average and minimum temperatures in Mombasa for September based on the historical data.
Last Year
Historical Data
The expected average maximum temperature in September is +84°F with a maximum of +86°F and a minimum of +73°F.
The average maximum temperature goes up 14% by the end of the month, compared with the beginning of the month, from +82°F to +84°F.
Is Mombasa warm or cold in September?
Mombasa is typically warm in September.
Maximum temperatures go up compared to the previous month from +81°F to +82°F. The minimum temperature also goes up from +72°F to +73°F.
It’s generally warm, but pack a long-sleeve shirt for evenings.
Take a look at how September is compared to other months in Mombasa:
Water temperature in Mombasa in September
Water in Mombasa in September is Warm. It varies from +77°F to +80°F, with an average of +79°F.This is almost similar to the air temperature, which averages +82°F.
The water temperature in September 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 +85°F. The coldest water temperatures are in August, with an average of +78°F.
Can you swim in Mombasa in September?
You can absolutely swim in Mombasa in September, the water is warm (+79°F in average), similar to heated pools. Suitable for most people, including children and the elderly.
🦭
Cold
Below +61°F
🏄♂️
Fresh
61°F - 70°F
🏊
Comfortable
70°F - 77°F
👙
Warm
77°F - 82°F
🔥
Very warm
+82°C and up
Bring your swimming suit, sunscreen and your favorite inflatable pink flamingo.
Climate in Mombasa in September
Mombasa weather looks like this, on average, in September and the surrounding months.
August
September
October
Avg. temperature
+81°F
+82°F
+84°F
Min. temperature
+68°F
+68°F
+70°F
Max. temperature
+86°F
+86°F
+90°F
Rainfall
65 mm
54 mm
76 mm
Wind
3 m/s
3 m/s
2 m/s
Avg. water temperature
+78°F
+79°F
+80°F
Humidity
81%
80%
80%
Air pressure
1015 HPa
1014 HPa
1012 HPa
Sunny days
0
1
1
Cloudy days
2
2
3
Rainy days
29
27
27
Snowy days
0
0
0
September weather is still as ok as in August.It’s getting warmer as September arrives. The average maximum temperature goes up from +81°F to +82°F during the day.As September arrives, the amount of rainfall goes down. On average, the rainfall volume decreases from 65 mm to 54 mm.It feels drier, as humidity decreases from 81% to 80%.The average wind speed doesn’t change much during September, staying around 3 m/s.The good news is there are likely to be more sunny days in September, from 0 to 1.
October brings much the same weather, it remains ok.
Wind speed in Mombasa in September based on historical data.
Last Year
Historical Data
The average wind speed is 4 m/s getting up to 5 m/s which is a light breeze; barely moving the tree leaves.
The average wind speed in Mombasa is gradually increasing during September, going from 4 m/s to 4 m/s over the course of the month.
Rain
Amount of rainfall in mm during September in Mombasa based on historical data.
Last Year
Historical Data
Total precipitation in September is about 30 mm, with a 57% chance of rain on a typical day. The maximum amount of rainfall per day is around 8 mm, which is considered light rain.September is a pretty wet month with over 17 rainy days, so don’t forget to pack an umbrella, raincoat, and a pair of wellies.
Here’s how September 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 September in Mombasa?
This is the weather in Mombasa in September 2023:
1 September
☀️
+82°F
2 September
☀️
+83°F
3 September
☀️
+84°F
4 September
☀️
+83°F
5 September
☀️
+85°F
6 September
☁️
+85°F
7 September
☀️
+85°F
8 September
☁️
+85°F
9 September
☀️
+84°F
10 September
🌧️
+86°F
11 September
☁️
+83°F
12 September
☁️
+84°F
13 September
☀️
+85°F
14 September
🌧️
+85°F
15 September
☁️
+85°F
16 September
🌧️
+83°F
17 September
☀️
+86°F
18 September
☁️
+84°F
19 September
🌧️
+85°F
20 September
☀️
+86°F
21 September
☀️
+85°F
22 September
☀️
+86°F
23 September
☀️
+85°F
24 September
☁️
+83°F
25 September
☁️
+85°F
26 September
☁️
+86°F
27 September
☁️
+85°F
28 September
☀️
+86°F
29 September
🌧️
+82°F
30 September
☀️
+85°F
In September 2023 Mombasa had 15 sunny days, 10 cloudy days, and 5 rainy days. The average maximum temperature was +84°F, with an absolute maximum of +86°F and a minimum of +82°F. The average humidity was 79%, with a maximum of 100% and a minimum of 64%. The average wind speed was 4 m/s, with a maximum of 8 m/s and a minimum of 0 m/s.
Are you planning a trip in September?
Climate Change Over the Years
This is how Mombasa climate has changed over the last 43 years.
The climate in Mombasa in September has not changed that much over the last 43 years.
The average temperature was the lowest in 1979 (+84°F) and the highest in 2023 (+86°F). 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 September:
Is September a good time to visit Mombasa?
It’s always a good time to visit Mombasa, but the weather is changeable in September, so plan a mix of indoor and outdoor activities and exploring, and pack for every eventuality.
Can you sunbathe in Mombasa in September?
September 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 September?
Yes, you can swim in Mombasa in September, the water temperature averaging at +79°F. This temperature is considered warm and comfortable for most swimmers.
Is Mombasa rainy in September?
Mombasa is often rainy in September. You may get a bit damp when outside, so pack an umbrella, and maybe even a raincoat.
Is it sunny in Mombasa in September?
Usually, it’s not very sunny in Mombasa in September, often it’s pretty cloudy. Pack for any eventuality; layering can help reduce the number of bulky items needed.
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.
