Climate and average weather in Mumias
In Mumias, the weather is hot, wet, and partly cloudy and remarkably steady, with daytime highs holding near hot levels all year. The wettest stretch peaks around April.
Over the course of the year, the temperature in Mumias typically varies from 17°C to 30°C, and is rarely below 15°C or above 33°C. February is the hottest month of the year, while July is the coldest.
Based on the travel score, the best times of year to visit Mumias for warm-weather activities are from late May to late September and mid November to mid March.
- Hottest
- Feb
- 30°
- Coldest
- Jul
- 17°
- Wettest
- Apr
- 257 mm
- Driest
- Feb
- 81 mm
- Rain / yr
- 1896 mm
- 277 wet days
- Daylight
- 12.0–12.0 h
- shortest–longest
- Elevation
- 1,321 m
- 0.3°N
- Clearest
- Feb
- 58% cloud
Mumias is city.
Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.
Mumias weather by month, at a glance
The whole year in one picture — sky, rain, humidity, temperature and travel score. Click any band to jump to its full chart.
Each stripe is one measure across the whole year, stacked so a single day reads top to bottom. The sky band runs overcast grey on top down to clear blue at the base — more blue means sunnier — followed by the rainfall curve, the humidity band, a temperature strip that tints each stretch of the year by how warm its average high is, and the travel-score line at the foot. Scan straight down any date to read that day across every measure at once; the score climbs highest around late May to late September.
Temperature through the year
Daily average highs and lows in Mumias, from 1991–2020 of climate data. The shaded bands show the range most days fall in — 10th to 90th percentile.
Temperatures in Mumias stay fairly even through the year, without a distinct hot or cool season. The warmest month is February, with an average high of 30°C and low of 18°C; the coolest is July, with an average low of 17°C and high of 26°C.
Days typically run about 10°C warmer than nights, with the widest day–night swing (around 12°C) in February.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 29 | 30 | 29 | 27 | 27 | 26 | 26 | 27 | 27 | 27 | 27 | 28 |
| Avg low (°C) | 17 | 18 | 18 | 18 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 |
| Avg high (°C) | Avg low (°C) | |
|---|---|---|
| Jan | 29 | 17 |
| Feb | 30 | 18 |
| Mar | 29 | 18 |
| Apr | 27 | 18 |
| May | 27 | 17 |
| Jun | 26 | 17 |
| Jul | 26 | 17 |
| Aug | 27 | 17 |
| Sep | 27 | 17 |
| Oct | 27 | 17 |
| Nov | 27 | 17 |
| Dec | 28 | 17 |
Average hourly temperature in Mumias
A compact picture of the whole year, hour by hour: each column is a day, each row an hour, and the color is the modeled average temperature. Darker overlays mark night, lighter ones the civil-twilight hours around sunrise and sunset.
Read left to right for the day of the year and top to bottom for the hour of the day; the color is the modeled temperature, cool blues through to hot reds on the same scale as the other charts. A vertical slice is a single day's swing — coolest just before dawn, warmest in the mid-afternoon — while a horizontal slice follows one hour across the seasons. The darker overlay marks night and the lighter one the twilight around sunrise and sunset. Colors run warmest on February afternoons, near 30°C, and coldest before dawn in July, near 17°C.
Mumias weather by month
Every month at a glance. Click a month for its detailed page.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|
| Jan | 29° / 17° | 102 | 15.8 | 12 | 4.8 |
| Feb | 30° / 18° | 81 | 13.6 | 12 | 4.5 |
| Mar | 29° / 18° | 158 | 21.7 | 12 | 4.0 |
| Apr | 27° / 18° | 257 | 27.4 | 12 | 3.6 |
| May | 27° / 17° | 237 | 28.3 | 12 | 3.8 |
| Jun | 26° / 17° | 144 | 24.8 | 12 | 4.3 |
| Jul | 26° / 17° | 119 | 22 | 12 | 4.8 |
| Aug | 27° / 17° | 139 | 24.8 | 12 | 4.4 |
| Sep | 27° / 17° | 137 | 24.8 | 12 | 4.2 |
| Oct | 27° / 17° | 189 | 27.9 | 12 | 3.7 |
| Nov | 27° / 17° | 197 | 25.8 | 12 | 3.9 |
| Dec | 28° / 17° | 137 | 20.1 | 12 | 4.7 |
Chance of rain
How likely it is to rain on a typical day, and how that shifts across the wetter and drier seasons.
Mumias gets about 1896 mm of precipitation a year. On a typical day the chance of rain is very wet, but that rises and falls sharply with the seasons.
The wetter season lasts 3.3 months, from around Mar 23 to Jul 1, peaking in April at about 96% chance on a given day. The drier stretch runs the rest of the year, bottoming out around Feb 5.
April is the wettest month by volume, with 257 mm over about 27 wet days; February is the driest, with 81 mm.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rain on a day (%) | 51 | 49 | 70 | 91 | 91 | 82 | 72 | 79 | 83 | 90 | 86 | 64 |
| Rain days | 16 | 14 | 22 | 27 | 28 | 25 | 22 | 25 | 25 | 28 | 26 | 20 |
| Rain on a day (%) | Rain days | |
|---|---|---|
| Jan | 51 | 16 |
| Feb | 49 | 14 |
| Mar | 70 | 22 |
| Apr | 91 | 27 |
| May | 91 | 28 |
| Jun | 82 | 25 |
| Jul | 72 | 22 |
| Aug | 79 | 25 |
| Sep | 83 | 25 |
| Oct | 90 | 28 |
| Nov | 86 | 26 |
| Dec | 64 | 20 |
Monthly rainfall
Over a full year, Mumias collects about 1896 mm of rain across 277 wet days — roughly 158 mm in an average month.
It doesn’t fall evenly. April is the wettest month with 257 mm, while February is the driest at just 81 mm. The three wettest months alone bring about 36% of the year’s total.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rainfall (mm) | 102 | 81 | 158 | 257 | 237 | 144 | 119 | 139 | 137 | 189 | 197 | 137 |
| Rain days | 16 | 14 | 22 | 27 | 28 | 25 | 22 | 25 | 25 | 28 | 26 | 20 |
| Rainfall (mm) | Rain days | |
|---|---|---|
| Jan | 102 | 16 |
| Feb | 81 | 14 |
| Mar | 158 | 22 |
| Apr | 257 | 27 |
| May | 237 | 28 |
| Jun | 144 | 25 |
| Jul | 119 | 22 |
| Aug | 139 | 25 |
| Sep | 137 | 25 |
| Oct | 189 | 28 |
| Nov | 197 | 26 |
| Dec | 137 | 20 |
Clouds and sunshine
How often the daytime sky is clear, partly cloudy or overcast.
In Mumias, the average share of the sky covered by clouds shows significant seasonal variation over the course of the year.
The clearer part of the year begins around December 6 and lasts for 3.4 months, ending around March 19. The clearest month is February, when the sky is clear, mostly clear, or partly cloudy 50% of the time on average.
The cloudier part of the year begins around March 20 and lasts for 2.0 months, ending around May 20. The cloudiest month is April, when it is overcast or mostly cloudy 82% of the time.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Clearer (%) | 50 | 50 | 39 | 18 | 32 | 37 | 36 | 41 | 45 | 25 | 21 | 45 |
| Cloudier (%) | 50 | 50 | 61 | 82 | 68 | 63 | 64 | 59 | 55 | 75 | 79 | 55 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| Jan | 50 | 50 |
| Feb | 50 | 50 |
| Mar | 39 | 61 |
| Apr | 18 | 82 |
| May | 32 | 68 |
| Jun | 37 | 63 |
| Jul | 36 | 64 |
| Aug | 41 | 59 |
| Sep | 45 | 55 |
| Oct | 25 | 75 |
| Nov | 21 | 79 |
| Dec | 45 | 55 |
Daylight, sunrise and sunset
Hours of daylight through the year, with sunrise and sunset times.
The gold band is daylight — sunrise runs along its lower edge, sunset along the upper — so it widens toward summer and pinches toward winter, with night the dark area above and below. Close to the equator, Mumias barely changes through the year: days stay near 12 hours of light in every season.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight (h) | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 |
| Sunrise (AM) | 6:52 | 6:57 | 6:52 | 6:42 | 6:38 | 6:42 | 6:47 | 6:46 | 6:36 | 6:27 | 6:28 | 6:39 |
| Sunset (PM) | 6:51 | 6:56 | 6:52 | 6:42 | 6:39 | 6:43 | 6:48 | 6:46 | 6:36 | 6:27 | 6:27 | 6:38 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| Jan | 12.0 | 6:52 | 6:51 |
| Feb | 12.0 | 6:57 | 6:56 |
| Mar | 12.0 | 6:52 | 6:52 |
| Apr | 12.0 | 6:42 | 6:42 |
| May | 12.0 | 6:38 | 6:39 |
| Jun | 12.0 | 6:42 | 6:43 |
| Jul | 12.0 | 6:47 | 6:48 |
| Aug | 12.0 | 6:46 | 6:46 |
| Sep | 12.0 | 6:36 | 6:36 |
| Oct | 12.0 | 6:27 | 6:27 |
| Nov | 12.0 | 6:28 | 6:27 |
| Dec | 12.0 | 6:39 | 6:38 |
Sunny days
How many genuinely sunny days each month brings — days the sky stays clear or mostly clear — banded into plain-language zones.
Mumias averages about 5 sunny days a month — counting the days the sky stays clear or mostly clear — with a clear seasonal swing between 1 and 10 days.
The sunnier stretch runs 3.8 months, from around Dec 3 to Mar 27. The sunniest month is January, with roughly 9 sunny days (mixed).
The greyest month is April, down near 2 sunny days — about 80% fewer than the January peak.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sunny days | 9 | 8 | 7 | 2 | 3 | 4 | 3 | 4 | 5 | 2 | 2 | 7 |
| Sky | Mixed | Mixed | Gloomy | Gloomy | Gloomy | Gloomy | Gloomy | Gloomy | Gloomy | Gloomy | Gloomy | Gloomy |
| Sunny days | Sky | |
|---|---|---|
| Jan | 9 | Mixed |
| Feb | 8 | Mixed |
| Mar | 7 | Gloomy |
| Apr | 2 | Gloomy |
| May | 3 | Gloomy |
| Jun | 4 | Gloomy |
| Jul | 3 | Gloomy |
| Aug | 4 | Gloomy |
| Sep | 5 | Gloomy |
| Oct | 2 | Gloomy |
| Nov | 2 | Gloomy |
| Dec | 7 | Gloomy |
Humidity comfort
Share of days at each humidity comfort level, based on the dew point — the measure that tracks how muggy it actually feels.
Humidity comfort is graded by the dew point — the temperature at which the air would be fully saturated — because it tracks how muggy it actually feels far better than relative humidity does. A low dew point feels dry and crisp; a high one feels sticky and oppressive no matter the reading on a humidity gauge.
In Mumias, how humid it feels changes dramatically over the year.
The more humid part of the year lasts 3.7 months, from around March 17 to July 8. The muggiest month is April, when the air feels humid, muggy or worse about 97% of the time.
The most comfortable stretch runs from around November 21 to March 16, and February is the most comfortable month — the air is dry or comfortable 46% of the time.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Dry (%) | 16 | 19 | 7 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 8 |
| Comfortable (%) | 30 | 26 | 15 | 3 | 0 | 6 | 24 | 31 | 27 | 15 | 18 | 28 |
| Humid (%) | 52 | 51 | 70 | 75 | 80 | 92 | 76 | 69 | 73 | 84 | 79 | 62 |
| Muggy (%) | 2 | 3 | 7 | 22 | 20 | 2 | 0 | 0 | 0 | 1 | 2 | 1 |
| Dry (%) | Comfortable (%) | Humid (%) | Muggy (%) | |
|---|---|---|---|---|
| Jan | 16 | 30 | 52 | 2 |
| Feb | 19 | 26 | 51 | 3 |
| Mar | 7 | 15 | 70 | 7 |
| Apr | 0 | 3 | 75 | 22 |
| May | 0 | 0 | 80 | 20 |
| Jun | 0 | 6 | 92 | 2 |
| Jul | 0 | 24 | 76 | 0 |
| Aug | 0 | 31 | 69 | 0 |
| Sep | 0 | 27 | 73 | 0 |
| Oct | 0 | 15 | 84 | 1 |
| Nov | 1 | 18 | 79 | 2 |
| Dec | 8 | 28 | 62 | 1 |
Wind
Average wind speed through the year, banded into plain-language speed zones so a number reads as 'breezy' or 'calm' without knowing the scale.
This is the average sustained wind speed at the standard 10 metres above open ground — the steady flow a weather station reports, not the sharper gusts that come and go, which can run half again as fast. It's the number that says whether a place is generally breezy or calm.
Wind in Mumias is steady company: average speeds sit near 6 km/h — calm — in every month of the year, with no meaningful windy or calm season.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Wind speed (km/h) | 7 | 7 | 6 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 6 |
| Feels | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm |
| Wind speed (km/h) | Feels | |
|---|---|---|
| Jan | 7 | calm |
| Feb | 7 | calm |
| Mar | 6 | calm |
| Apr | 5 | calm |
| May | 5 | calm |
| Jun | 5 | calm |
| Jul | 5 | calm |
| Aug | 5 | calm |
| Sep | 5 | calm |
| Oct | 5 | calm |
| Nov | 5 | calm |
| Dec | 6 | calm |
Best time to visit Mumias
To characterize how pleasant the weather is in Mumias throughout the year, we compute two travel scores — one for general sightseeing, one for beach and pool weather.
Around late September, Mumias is still near the tail of its best-weather window — great conditions with the peak-season crowds already thinning.
Inferred from the travel-score curve; month-by-month visitor numbers are a planned addition.
The travel score favors clear, rainless days with daytime highs between 18°C and 28°C. Based on this score, the best times of year to visit Mumias for general outdoor tourist activities run from late May to early October and again from mid November to late March, with a peak score in the first week of January.
The travel score (filled area), and its constituents: the temperature score (red line), the cloud cover score (blue line), and the precipitation score (green line).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Travel score (0–10) | 4.8 | 4.5 | 4.0 | 3.6 | 3.8 | 4.3 | 4.7 | 4.4 | 4.2 | 3.8 | 3.9 | 4.7 |
| Rating | fair | fair | fair | fair | fair | fair | fair | fair | fair | fair | fair | fair |
| Travel score (0–10) | Rating | |
|---|---|---|
| Jan | 4.8 | fair |
| Feb | 4.5 | fair |
| Mar | 4.0 | fair |
| Apr | 3.6 | fair |
| May | 3.8 | fair |
| Jun | 4.3 | fair |
| Jul | 4.7 | fair |
| Aug | 4.4 | fair |
| Sep | 4.2 | fair |
| Oct | 3.8 | fair |
| Nov | 3.9 | fair |
| Dec | 4.7 | fair |
The beach/pool score favors clear, rainless days with daytime highs between 24°C and 34°C. Based on this score, the best time of year to visit Mumias for hot-weather activities is from mid December to mid March, with a peak score in the first week of February.
The beach/pool score (filled area), and its constituents: the temperature score (red line), the cloud cover score (blue line), and the precipitation score (green line).
What to pack for Mumias, by month
Month by month, what's worth putting in the bag — from the temperature range, rain chance, sun and wind. Tap a month for a quick packing note.
Mumias packs about the same all year — highs hold near 30°C. Across the year the things worth having are light clothes, rain gear and sun protection.
In February, Mumias sees daytime highs around 30°C and nights near 18°C. Pack light clothes, rain gear and sun protection. About 14 days see rain.
UV index (midday) in Mumias by month
Clear-sky midday UV index through the year, shaded by the WHO exposure levels — how much sun protection each month calls for.
Under clear skies, the midday UV index in Mumias peaks around March 16 at about 16 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 18 at about 10 (extreme).
The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 15 | 14 | 16 | 14 | 12 | 10 | 11 | 11 | 12 | 14 | 12 | 12 |
| Level | Extreme | Extreme | Extreme | Extreme | Extreme | Very high | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 15 | Extreme |
| Feb | 14 | Extreme |
| Mar | 16 | Extreme |
| Apr | 14 | Extreme |
| May | 12 | Extreme |
| Jun | 10 | Very high |
| Jul | 11 | Extreme |
| Aug | 11 | Extreme |
| Sep | 12 | Extreme |
| Oct | 14 | Extreme |
| Nov | 12 | Extreme |
| Dec | 12 | Extreme |
Average hourly UV index in Mumias
Modeled clear-sky UV for every hour of every day — when in the day sun protection actually matters.
The whole year hour by hour: each column is a day, each row an hour, and the color is the modeled clear-sky UV index — the midday peak scaled down as the sun sits lower in the sky. Darker overlays mark night, lighter ones the civil-twilight hours around sunrise and sunset.
UV falls off far faster than brightness as the sun drops, so even in March the burn window is concentrated in the middle of the day: about 8.5 hours a day reach index 3 (protection recommended), and 6.5 hours reach 6 or more. Mornings and late afternoons stay comparatively gentle year round.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV ≥ 3 (h/day) | 8 | 8 | 8.5 | 8 | 7.5 | 7.5 | 7.5 | 8 | 8 | 8 | 8 | 7.5 |
| UV ≥ 6 (h/day) | 6.5 | 6.5 | 6.5 | 6.5 | 5.5 | 5 | 5.5 | 6 | 6 | 6.5 | 6 | 5.5 |
| UV ≥ 3 (h/day) | UV ≥ 6 (h/day) | |
|---|---|---|
| Jan | 8 | 6.5 |
| Feb | 8 | 6.5 |
| Mar | 8.5 | 6.5 |
| Apr | 8 | 6.5 |
| May | 7.5 | 5.5 |
| Jun | 7.5 | 5 |
| Jul | 7.5 | 5.5 |
| Aug | 8 | 6 |
| Sep | 8 | 6 |
| Oct | 8 | 6.5 |
| Nov | 8 | 6 |
| Dec | 7.5 | 5.5 |
Air quality in Mumias by month
Average fine-particle pollution (PM2.5) through the year — so you can see which months the air is worst, not just the yearly average.
Air quality in Mumias is worst in June — around 78 µg/m³ PM2.5 (unhealthy), and holds fairly steady the rest of the year.
Modeled monthly averages (CAMS reanalysis, 2015–2024).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM2.5 (µg/m³) | 74 | 68 | 67 | 67 | 69 | 78 | 76 | 74 | 71 | 73 | 77 | 76 |
| Level | Unhealthy | Unhealthy | Unhealthy | Unhealthy | Unhealthy | Unhealthy | Unhealthy | Unhealthy | Unhealthy | Unhealthy | Unhealthy | Unhealthy |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 74 | Unhealthy |
| Feb | 68 | Unhealthy |
| Mar | 67 | Unhealthy |
| Apr | 67 | Unhealthy |
| May | 69 | Unhealthy |
| Jun | 78 | Unhealthy |
| Jul | 76 | Unhealthy |
| Aug | 74 | Unhealthy |
| Sep | 71 | Unhealthy |
| Oct | 73 | Unhealthy |
| Nov | 77 | Unhealthy |
| Dec | 76 | Unhealthy |
Growing season
Mumias is frost-free year round — even the coldest nights rarely reach freezing, so there is no start or end to the growing season.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Frost-free chance (%) | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 |
| Frost nights | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Frost-free chance (%) | Frost nights | |
|---|---|---|
| Jan | 100 | 0 |
| Feb | 100 | 0 |
| Mar | 100 | 0 |
| Apr | 100 | 0 |
| May | 100 | 0 |
| Jun | 100 | 0 |
| Jul | 100 | 0 |
| Aug | 100 | 0 |
| Sep | 100 | 0 |
| Oct | 100 | 0 |
| Nov | 100 | 0 |
| Dec | 100 | 0 |
Growing degree days
Growing degree days tally heat above 10°C: each day adds however many degrees its average temperature runs over that threshold, and cold days add nothing. Mumias banks about 4,501 degree days a year, and the running total — which growers use to time plantings and predict maturity — climbs fastest around February.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Growing degree days (°C·days) | 402 | 383 | 415 | 376 | 371 | 347 | 350 | 362 | 363 | 380 | 365 | 386 |
| Growing degree days (°C·days) | |
|---|---|
| Jan | 402 |
| Feb | 383 |
| Mar | 415 |
| Apr | 376 |
| May | 371 |
| Jun | 347 |
| Jul | 350 |
| Aug | 362 |
| Sep | 363 |
| Oct | 380 |
| Nov | 365 |
| Dec | 386 |
Solar energy
Average daily shortwave solar energy reaching the ground, banded into brightness zones so the number means something at a glance.
Solar energy is how much sunlight actually reaches the ground each day, measured in kilowatt-hours per square metre (kWh/m²) — the combined effect of how long the sun is up, how high it climbs, and how much cloud gets in the way. It's the raw fuel a solar panel has to work with: for scale, 1 kWh/m² a day is dim and wintry, while 7+ is desert-bright.
Mumias receives about 5.8 kWh/m² a day of solar energy on average — bright — with a clear seasonal swing between 5.1 and 6.7 kWh/m².
The brighter stretch of the year lasts 4.3 months, from around Dec 4 to Apr 12. The brightest month is February, averaging about 6.6 kWh/m² (intense).
The dimmest month is July, down near 5.1 kWh/m² — roughly 23% less than the February peak.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Solar energy (kWh/m²) | 6.3 | 6.7 | 6.5 | 5.8 | 5.5 | 5.2 | 5.1 | 5.5 | 6.1 | 6.0 | 5.8 | 6.0 |
| Level | Intense | Intense | Intense | Bright | Bright | Bright | Bright | Bright | Intense | Bright | Bright | Bright |
| Solar energy (kWh/m²) | Level | |
|---|---|---|
| Jan | 6.3 | Intense |
| Feb | 6.7 | Intense |
| Mar | 6.5 | Intense |
| Apr | 5.8 | Bright |
| May | 5.5 | Bright |
| Jun | 5.2 | Bright |
| Jul | 5.1 | Bright |
| Aug | 5.5 | Bright |
| Sep | 6.1 | Intense |
| Oct | 6.0 | Bright |
| Nov | 5.8 | Bright |
| Dec | 6.0 | Bright |
Where is Mumias?
Mumias sits at 0.3°N, 34.5°E, 1,321 m above sea level, in Kenya. The nearest listed city is Lugulu, 21 km away.
Topography around Mumias
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Mumias.
Within 3 km, the terrain around Mumias has only modest variations in elevation — a maximum elevation change of 102 m around an average of 1,300 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 224 m; within 80 km, extreme variations in elevation — a maximum elevation change of 2,661 m.
The land around Mumias is covered by shrubs (39%) and trees (26%) within 3 km, shrubs (41%), trees (23%) and cropland (20%) within 16 km, and shrubs (27%), trees (23%) and cropland (22%) within 80 km.
Kenya travel facts
- Travel advisory
- Level 2
- Exercise Increased Caution
- Power plugs
- Type G
- 240 V · 50 Hz
- Prices
- ≈ 34% of US
- price level, 2025
- GDP per capita
- $2,363
- 2025
- Happiness
- 4.7 / 10
- World Happiness, 2025
- Homicide rate
- 4.9
- per 100k, 2022
- Road deaths
- 28.3
- per 100k/yr, 2019
- Income group
- Lower middle
- World Bank
- English
- High
- EF EPI 593
- Religion
Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.
Data sources
Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Mumias (0.3347°, 34.488°, elevation 1,321 m), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).