Kisii climate
Kisii (Kenya) has a tropical rainforest climate (Köppen Af). The average temperature over the year is 20 °C69 °F, and about 1,747 mm69 in of precipitation falls in an average year.
Temperature by month
Precipitation by month
Kisii climate table
| Month | High °C°F | Low °C°F | Mean °C°F | Precip. mmin |
|---|---|---|---|---|
| Jan | 2680 | 1559 | 2169 | 933.7 |
| Feb | 2883 | 1560 | 2271 | 682.7 |
| Mar | 2882 | 1661 | 2271 | 1766.9 |
| Apr | 2678 | 1660 | 2169 | 25510 |
| May | 2476 | 1560 | 2068 | 2148.4 |
| Jun | 2474 | 1559 | 1966 | 1003.9 |
| Jul | 2475 | 1458 | 1966 | 662.6 |
| Aug | 2576 | 1558 | 2067 | 973.8 |
| Sep | 2678 | 1559 | 2069 | 1164.6 |
| Oct | 2679 | 1560 | 2169 | 1706.7 |
| Nov | 2577 | 1560 | 2068 | 2359.3 |
| Dec | 2578 | 1559 | 2068 | 1556.1 |
| Year | 2883 | 1458 | 2069 | 1,74769 |
“Year” row: highest monthly high, lowest monthly low, annual mean and annual total.
| Month | Humid. | Cloud | Solar | Daylight |
|---|---|---|---|---|
| Jan | 64% | 56% | 6.3 | 12:09 |
| Feb | 60% | 57% | 6.6 | 12:08 |
| Mar | 64% | 67% | 6.5 | 12:07 |
| Apr | 74% | 77% | 6.0 | 12:06 |
| May | 77% | 68% | 5.8 | 12:05 |
| Jun | 76% | 60% | 5.5 | 12:05 |
| Jul | 72% | 55% | 5.5 | 12:05 |
| Aug | 70% | 61% | 5.8 | 12:06 |
| Sep | 68% | 63% | 6.3 | 12:06 |
| Oct | 69% | 70% | 6.2 | 12:08 |
| Nov | 74% | 70% | 5.9 | 12:09 |
| Dec | 70% | 59% | 6.0 | 12:10 |
Humid. = average relative humidity at 2 m; cloud = average cloud amount; solar = average daily solar energy reaching the ground in kWh/m² (all-sky); daylight in hours:minutes, calculated for the 15th of each month.
What the climate of Kisii is like
The warmest month is March, with an average high of 28 °C82 °F and a low of 16 °C61 °F. The coldest is July, when highs average 24 °C75 °F and lows 14 °C58 °F. Temperatures barely change through the year: the warmest and the coolest month differ by only 2.9 °C5.3 °F.
It is wet, with about 1,747 mm69 in of precipitation per year. The wettest three-month stretch is March–May, which brings 37% of the annual total. The wettest month is April (255 mm10 in), the driest is July (66 mm2.6 in).
Relative humidity ranges from 60% in February to 77% in May. The clearest skies (lowest average cloud amount, 55%) are typical of July. Average wind speed near the ground ranges from 6 km/h (4 mph) in November to 8 km/h (5 mph) in February.
Best time to visit Kisii
Based on these averages, the most comfortable months for sightseeing and outdoor activities are January and February and June–August: average highs of 24 °C74 °F to 28 °C83 °F with 66 mm2.6 in to 100 mm3.9 in of precipitation per month.
The most challenging month is April, which is very wet (255 mm10 in).
Comfort score: months are ranked by how close they come to an average high of 21–28 °C (70–82 °F), lows above 5 °C (41 °F), little precipitation and moderate humidity. The best-ranked months of each place are recommended, even where none meets all of these. These are general rules of thumb applied to long-term averages.
What to pack for Kisii
- Wetter months (March–May, October–December) — highs 2476 to 28 °C82 °F, lows 1559 to 16 °C61 °F, about 201 mm7.9 in of precipitation a month. Pack light summer clothes such as T-shirts, shorts or light dresses, an extra layer for the cooler mornings and evenings and a good rain jacket or umbrella and quick-drying shoes.
- Drier months (January and February, June–September) — highs 2474 to 28 °C83 °F, lows 1458 to 15 °C60 °F, about 90 mm3.5 in of precipitation a month. Pack light summer clothes such as T-shirts, shorts or light dresses, an extra layer for the cooler mornings and evenings and an umbrella or light rain jacket.
How Kisii compares
Compared with Kisumu, about 64 km to the north, Kisii is on average 3.1 °C5.6 °F cooler and receives 13% less precipitation (1,747 mm69 in vs 2,009 mm79 in). The difference is largest in May (3.3 °C6 °F cooler).
Of the 18 places in Kenya covered by World Climates, Kisii is the 14th warmest by annual mean temperature and the 6th wettest by annual precipitation. See all of them on the Kenya climate page.
Places in other countries with the most similar temperature and rainfall pattern (seasons shifted for the other hemisphere where needed): Gisenyi (Rwanda, Am), Ibanda (Uganda, Af) and Armenia (Colombia, Af).
Nearby places
- Kisumu 64 km · 23 °C74 °F · 2,009 mm79 in
- Tarime 87 km · 22 °C72 °F · 1,089 mm43 in
- Khwisero 97 km · 21 °C71 °F · 1,868 mm74 in
- Kakamega 107 km · 21 °C69 °F · 1,950 mm77 in
- Musoma 141 km · 24 °C76 °F · 1,179 mm46 in
- Eldoret 145 km · 17 °C63 °F · 1,950 mm77 in
- Nakuru 151 km · 19 °C66 °F · 1,233 mm49 in
- Bunda 179 km · 24 °C75 °F · 999 mm39 in
Frequently asked questions
What is the warmest month in Kisii?
March is the warmest month in Kisii, with an average high of 28 °C (82 °F) and an average low of 16 °C (61 °F).
What is the coldest month in Kisii?
July is the coldest month, with an average high of 24 °C (75 °F) and an average low of 14 °C (58 °F).
When does it rain the most in Kisii?
April is the wettest month with about 255 mm (10.1 in) of precipitation; July is the driest with about 66 mm (2.6 in).
What is the best time to visit Kisii?
Judging by long-term averages, the most comfortable months are January and February and June–August.
About this data
All figures are 25-year averages (January 2001 – December 2025) from the NASA POWER project. Temperature, humidity, wind and precipitation come from the MERRA-2 reanalysis (precipitation is the bias-corrected MERRA-2 product), cloud and solar values from CERES satellite data. They describe a grid cell of roughly 50–70 km, not a single weather station, so they can differ from airport records — most of all on coasts, in mountains and for rainfall. Average highs and lows are the monthly mean temperature plus/minus half of the average daily temperature range. Counts of rainy days are not part of this dataset.