Climate and monthly weather forecastMumias, Kenya
Climate and monthly weather forecast
The climate of Mumias
Mumias, situated in Kenya, experiences a climate classified as Af according to the Köppen climate classification, indicative of a tropical rainforest climate. The weather exhibits high temperatures and substantial rainfall throughout the year, consistent with the tropical location.Dissecting the climate data, the temperature ranges from high 20s to low 30s in Celsius during the day, while the night temperatures moderately vary from lower teens to higher. Constant throughout the year, the daily average temperature does not drop below 23.3°C (73.9°F). High humidity levels persist, with the lowest average humidity reaching 54% and a peak at 85%.
The city receives considerable rainfall; the driest month, with 35mm (1.38") of rain, is February and the month with the most rainfall is May, with approximately 175mm (6.89") of rain. Additionally, the number of rainfall days per month reaches an average high of 25.9, making it a prevalently rainy locale.
Being in the vicinity of the Equator, Mumias receives a regular amount of daylight hours, roughly 12.1 hours every day, with only a slight variation in the number of sunshine days. Besides, the UV index remains moderately high throughout the year, reaching 5 to 6, indicating the need for sun protection measures.
The best time to visit Mumias
For those preferring to exploit the higher temperatures, January and February serve as the ideal months to visit Mumias. During this period, the average high temperature is nearly 29°C (84.2°F), and it also coincides with the least amount of rainfall, making these months especially pleasant for outdoor activities. Furthermore, with 9.8 hours of daily sunshine in February, visitors can thoroughly enjoy the sunny weather.The worst time to visit Mumias
On contrary, May is arguably the least favourable month for sightseeing and outdoor activities in Mumias. It records the maximum average rainfall, at 175mm (6.89"), and the highest number of rainy days, a massive 25.9. This period has the lowest number of sunshine days and an average high temperature of 24.3°C (75.7°F), fostering a rather chilled and damp atmosphere that may restrict outdoor exploits.Spring weather in Mumias
Mumias experiences a warm and wet spring season: March, April and May. March initiates an increase in rainfall, reaching 85mm (3.35"), coupled with a relative humidity of 62%. April witnesses an upsurge in rainfall to 150mm (5.91"), with an increase in the number of rainy days to 23.8. Moreover, the downward trend in temperature starts in April, from 28.9°C (84°F) to 26.4°C (79.5°F). May, the wettest month of the year, has a high humidity of 85%, indicating stable and excessive rainfall.Summer weather in Mumias
Summer in Mumias, extending from June to August, brings moderate temperatures and consistent rainfall. June registers one of the lowest average high temperatures at 23.8°C (74.8°F) and an average rainfall of 80mm (3.15"). July to August experiences steady temperatures from 23.3°C (73.9°F) to 24.6°C (76.3°F). Although there might be variations in the amount of rainfall recorded during this period, the prevalence of rainy days remains constant.Autumn weather in Mumias
Autumn in Mumias, covering September, October and November, witnesses an increase in temperature and rainfall. The high temperature ranges from 25.8°C (78.4°F) to 26.4°C (79.5°F) while average rainfall increases significantly to 142mm (5.59") towards November. It also records 9.4 hours of sunshine daily in November, offering some respite from the rains despite the slightly cooler temperatures.Winter weather in Mumias
Winter, from December to February, is warmer in Mumias, with average high temperatures climbing to 28.3°C (82.9°F) in December and peaking at 29.8°C (85.6°F) in February. Despite a marginal drop in temperature in January to 28.9°C (84°F), winters are relatively warm. Rainfall lessens considerably during this period, with the number of rainy days ranging from 10.8 to 22.1, making the winter months rather pleasant and suitable for outdoor activities.Weather in January
The weather in Mumias, Kenya, starts the year with temperatures fluctuating between 15.2°C (59.4°F) at night and 28.3°C (82.9°F) during the day. Despite being the beginning of the year, January is not the coldest month but, rather, it sets the pace for a year characterized by temperate climatic conditions. Weather in January »Weather in February
Moving into February, Mumias experiences slightly warmer temperatures, with the month's highest reaching up to 29.8°C (85.6°F). This subtle transition towards warmer conditions does not compromise the comfort of locals and visitors. Weather in February »Weather in March
Weather conditions in March share certain similarities with February, albeit with crucial differences. Temperatures continue to stay within comfort range, but the most significant change registers in the precipitation with 85mm (3.35") of rainfall, making it a noticeably wetter period. Weather in March »Weather in April
April marks a significant climatic turning point in Mumias with a remarkable increase in rainfall, which accumulates to about 150mm (5.91") - this is notably the highest precipitation level of the year. Concurrently, it is characterised by a considerable dip in temperature, marking a cool down in the weather. Weather in April »Weather in May
May offers no respite from the wet conditions, recording 175mm (6.89") of rainfall - the highest rainfall measurement for the year. Along with the rainfall, the city also experiences a dip in temperature, adding to the overall coolness of the climate. Weather in May »Weather in June
June transitions into a slightly drier period in Mumias with 80mm (3.15") rainfall, offering a break from the heavy showers characteristic of the previous months. Despite this apparent relief, the weather remains relatively cool, influenced by the high humidity that still prevails. Weather in June »Weather in July
July in Mumias is marked by a significant reduction in rainfall, registering only 53mm (2.09"), foreshadowing the arrival of the dry season. Concurrently, a small decrease in temperature is also noted, adding an element of chill to the air. Weather in July »Weather in August
August ushers in a subtle change in the city's climatic conditions, with an increase in rainfall - registering 77mm (3.03"). Despite the resurgence of rainfall, overall climatic conditions remain temperate and conducive to routine activities. Weather in August »Weather in September
September in Mumias experiences a significant drop in rainfall, recording an average of 51mm (2.01"), making it one of the dryer months of the year. Additionally, the temperatures of Mumias in September sees a slight rise, bringing forth agreeable weather. Weather in September »Weather in October
As October arrives in Mumias, it is accompanied by an increase in rainfall - amounting to 109mm (4.29"). Despite this uptick in rainfall, temperatures remain fairly stable, neither soaring nor dipping significantly. The month's significant rise in precipitation combined with its temperate temperatures paints a balanced climatic picture for the city. Weather in October »Weather in November
November in Mumias brings more rainfall, accumulating to 142mm (5.59"), marking one of the later peaks in rainfall for the year. The rainfall combines with a slight drop in temperature, hinting at a minor chill in the air. November's weather doesn't deter the residents or the tourists but rather adds to the charm of the bustling city. Weather in November »Weather in December
December, the final month of the year, brings in a bit of everything weather-wise for Mumias. The weather is a balanced amalgamation of rainfall - approximately 124mm (4.88"), and consistent, mild temperatures, averaging between 14.8°C (58.6°F) and 26.5°C (79.7°F). Weather in December »Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature
Mumias, Kenya
The warmest month (with the highest average high temperature) is February (29.8°C).
The month with the lowest average high temperature is July (23.3°C).
The month with the highest average low temperature is February (16.3°C).
The coldest month (with the lowest average low temperature) is June (13.7°C).
Average pressure
Mumias, Kenya
- Average pressure in January:
1012.8mbar - Average pressure in February:
1011.9mbar - Average pressure in March:
1012.2mbar - Average pressure in April:
1012.9mbar - Average pressure in May:
1014.1mbar - Average pressure in June:
1015.2mbar
- Average pressure in July:
1015.2mbar - Average pressure in August:
1014.6mbar - Average pressure in September:
1013.8mbar - Average pressure in October:
1012.6mbar - Average pressure in November:
1012.5mbar - Average pressure in December:
1012.9mbar
The months with the highest atmospheric pressure are June and July (1015.2mbar).
The month with the lowest atmospheric pressure is February (1011.9mbar).
Average wind speed
Mumias, Kenya
- Average wind speed in January:
9.3km/h - Average wind speed in February:
9.8km/h - Average wind speed in March:
8.1km/h - Average wind speed in April:
6.4km/h - Average wind speed in May:
5.5km/h - Average wind speed in June:
5.4km/h
- Average wind speed in July:
5.7km/h - Average wind speed in August:
5.7km/h - Average wind speed in September:
5.9km/h - Average wind speed in October:
6.7km/h - Average wind speed in November:
7.3km/h - Average wind speed in December:
8.5km/h
The windiest month (with the highest average wind speed) is February (9.8km/h).
The calmest month (with the lowest average wind speed) is June (5.4km/h).
Average humidity
Mumias, Kenya
The months with the highest relative humidity are May and June (85%).
The month with the lowest relative humidity is February (54%).
Average rainfall
Mumias, Kenya
- Average rainfall in January:
52mm - Average rainfall in February:
35mm - Average rainfall in March:
85mm - Average rainfall in April:
150mm - Average rainfall in May:
175mm - Average rainfall in June:
80mm
The wettest month (with the highest rainfall) is May (175mm).
The driest month (with the least rainfall) is February (35mm).
Average rainfall days
Mumias, Kenya
- Average rainfall days in January:
12.2 days - Average rainfall days in February:
10.8 days - Average rainfall days in March:
17.6 days - Average rainfall days in April:
23.8 days - Average rainfall days in May:
25.9 days - Average rainfall days in June:
23 days
- Average rainfall days in July:
20.8 days - Average rainfall days in August:
21.1 days - Average rainfall days in September:
17.4 days - Average rainfall days in October:
23.2 days - Average rainfall days in November:
22.7 days - Average rainfall days in December:
22.1 days
The month with the highest number of rainy days is May (25.9 days).
The month with the least rainy days is February (10.8 days).
Average daylight / Average sunshine
Mumias, Kenya
- Average daylight in January:
12h and 6min - Average daylight in February:
12h and 6min - Average daylight in March:
12h and 6min - Average daylight in April:
12h and 6min - Average daylight in May:
12h and 6min - Average daylight in June:
12h and 6min
- Average daylight in July:
12h and 6min - Average daylight in August:
12h and 6min - Average daylight in September:
12h and 6min - Average daylight in October:
12h and 6min - Average daylight in November:
12h and 6min - Average daylight in December:
12h and 6min
The month with the longest days is June (Average daylight: 12h and 6min).
The months with the shortest days are January and December (Average daylight: 12h and 6min).
- Average sunshine in January:
9h and 42min - Average sunshine in February:
9h and 48min - Average sunshine in March:
9h and 30min - Average sunshine in April:
8h and 54min - Average sunshine in May:
8h and 48min - Average sunshine in June:
9h and 6min
- Average sunshine in July:
9h and 12min - Average sunshine in August:
9h and 12min - Average sunshine in September:
9h and 42min - Average sunshine in October:
9h and 24min - Average sunshine in November:
9h and 24min - Average sunshine in December:
9h and 24min
The month with the most sunshine is February (Average sunshine: 9h and 48min).
The month with the least sunshine is May (Average sunshine: 8h and 48min).
Average sunshine days
Mumias, Kenya
- Average sunshine days in January:
14.9 days - Average sunshine days in February:
14.4 days - Average sunshine days in March:
10.9 days - Average sunshine days in April:
5 days - Average sunshine days in May:
4.3 days - Average sunshine days in June:
5.8 days
- Average sunshine days in July:
8.8 days - Average sunshine days in August:
8.2 days - Average sunshine days in September:
11.1 days - Average sunshine days in October:
6.3 days - Average sunshine days in November:
4.9 days - Average sunshine days in December:
6.3 days
The month with the most sunshine days is January (14.9 days).
The month with the least sunshine days is May (4.3 days).
Average UV index
Mumias, Kenya
The months with the highest UV index are January, February and March (UV index 6).
The months with the lowest UV index are April, May, June, July, August, September, October, November and December (UV index 5).
Average cloud cover
Mumias, Kenya
The month with the most cloud cover is May (Cloud cover 41).
The month with the least cloud cover is February (Cloud cover 13).
Average visibility
Mumias, Kenya
The months with the highest visibility are January, February, March and December (10km).
The months with the lowest visibility are May and June (8km).








