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 then reach 24 °C74 °F to 28 °C83 °F. Precipitation is 66 mm2.6 in to 100 mm3.9 in 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 ideal. That means 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
The nearest larger place is Kisumu, about 64 km to the north. Compared with it, Kisii is on average 3.1 °C5.6 °F cooler. It receives 13% less precipitation (1,747 mm69 in vs 2,009 mm79 in). The difference is largest in May (3.3 °C6 °F cooler).
World Climates covers 18 places in Kenya. By annual mean temperature, Kisii is the 14th warmest of them. By annual precipitation, it is the 6th wettest. See all of them on the Kenya climate page.
Some places in other countries have a very similar pattern of temperature and rainfall (with seasons shifted for the other hemisphere). The closest matches are Gisenyi (Rwanda, Am), Ibanda (Uganda, Af) and Armenia (Colombia, Af).
Nearby places
- Climate in Kisumu 64 km · 23 °C74 °F · 2,009 mm79 in
- Climate in Tarime 87 km · 22 °C72 °F · 1,089 mm43 in
- Climate in Khwisero 97 km · 21 °C71 °F · 1,868 mm74 in
- Climate in Kakamega 107 km · 21 °C69 °F · 1,950 mm77 in
- Climate in Musoma 141 km · 24 °C76 °F · 1,179 mm46 in
- Climate in Eldoret 145 km · 17 °C63 °F · 1,950 mm77 in
- Climate in Nakuru 151 km · 19 °C66 °F · 1,233 mm49 in
- Climate 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. Its average high is 28 °C (82 °F) and its average low is 16 °C (61 °F).
What is the coldest month in Kisii?
July is the coldest month. Its average high is 24 °C (75 °F) and its average low is 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. The gaps are largest 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.