Somanda climate — normals and trends
Somanda (Tanzania) has a tropical savanna climate (Aw) under the Köppen-Geiger classification. Its mean annual temperature is 22.5 °C and it receives 945 mm of precipitation per year.
These figures are normals computed over 86 complete calendar years, from 1940 to 2025, using ERA5 reanalysis data from the Copernicus programme.
The warmest month is October (24.5 °C on average) and the coldest is January (21.7 °C). Rainfall peaks in December.
Somanda averages 0 frost days, 88 hot days (≥ 30 °C) and 119 rainy days per year.
Somanda has warmed by +1.9 °C between 1940 and 2025, or +0.22 °C per decade. This trend is statistically significant.
The hottest day of the period reached 35.4 °C (on 13 March 1997) and the coldest 12.1 °C (on 18 January 1965).
Data from ERA5 reanalysis (Copernicus Climate Change Service), redistributed under a CC-BY 4.0 licence. Normals are recomputed whenever the archive is updated.
Climate normals · ERA5
SomandaSimiyu
- coords
- -3.37°, 33.95°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
22.5°C
Average daily high
28.3°C
Average daily low
17.6°C
Annual rainfall
945mm
Sunshine / day
10.9h
Mean relative humidity
61%
Average peak wind
15.5km/h
Seasonal range
2.8°C
Frost days (< 0 °C)
0 d/yr
Hot days (≥ 30 °C)
88 d/yr
Rainy days (≥ 1 mm)
119 d/yr
Annual snowfall
0.0 cm
Average feels-like high
29.4 °C
Average feels-like low
17.5 °C
Average peak gust
31.7 km/h
Tropical nights (≥ 20 °C)
17 d/yr
Solar radiation
21.7 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.9 °C
since 1940
+0.2 °C per decade · r² = 0.56 · p = < 0.001
Trend fitted by linear regression (ordinary least squares) on annual means. A trend is shown only when it is statistically significant (p < 0.05).
A climograph overlays rainfall (bars) and temperature (line): the standard reading in climatology, where you can see at a glance whether the warm season is also the dry one.
Records for the period
Hottest day
35.4 °C
13 March 1997
Coldest day
12.1 °C
18 January 1965
Wettest day
132 mm
25 February 2020
Windiest day
33.2 km/h
12 May 2007
Strongest gust
60.5 km/h
12 May 2007
Hottest feels-like
37.2 °C
21 March 2016
Coldest feels-like
9.0 °C
11 July 1944
Sunniest day
12.2 h
1 December 1940
Normals computed over complete calendar years 1940–2025.
A specific year
Pick a year and see how it compares to normal — warmer, drier or more extreme than usual?
Across the whole year
Month by month
| High | vs. normal | Precipitation | vs. normal | |
|---|---|---|---|---|
| Jan | 28.6 °C | +1.5 °C | 73 mm | -74 mm |
| Feb | 30.9 °C | +3.3 °C | 42 mm | -88 mm |
| Mar | 29.1 °C | +1.4 °C | 161 mm | -2 mm |
| Apr | 28.4 °C | +1.4 °C | 80 mm | -51 mm |
| May | 28.9 °C | +1.4 °C | 24 mm | -4 mm |
| Jun | 29.0 °C | +0.9 °C | 2 mm | -1 mm |
| Jul | 28.5 °C | +0.5 °C | 0 mm | -1 mm |
| Aug | 29.6 °C | +0.6 °C | 5 mm | +2 mm |
| Sep | 31.9 °C | +1.6 °C | 2 mm | -5 mm |
| Oct | 31.0 °C | +0.2 °C | 46 mm | +14 mm |
| Nov | 32.1 °C | +3.3 °C | 16 mm | -108 mm |
| Dec | 29.1 °C | +1.9 °C | 163 mm | -14 mm |
The year's extremes
What was the weather like that day?
Your birthday, a wedding, a memorable trip: discover the actual weather for any date since 1940.
Frequently asked questions
What is the climate of Somanda?
Somanda has a tropical savanna climate (Köppen Aw). Over 1940-2025, the average annual temperature is 22.5 °C and it receives 945 mm of precipitation per year.
What is the hottest day ever recorded in Somanda?
The hottest day measured in Somanda between 1940 and 2025 was 13 March 1997, reaching 35.4 °C.
What is the coldest day in Somanda?
The coldest day measured in Somanda between 1940 and 2025 was 18 January 1965, at 12.1 °C.
Does it snow in Somanda?
Almost never: Somanda sees virtually no snow, with about 0 frost days per year.
Has the climate of Somanda warmed?
Yes: Somanda warmed by +1.9 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Somanda?
The wettest day measured in Somanda between 1940 and 2025 was 25 February 2020, with 132 mm of rain in 24 hours.
What was the windiest day in Somanda?
The windiest day measured in Somanda between 1940 and 2025 was 12 May 2007, with winds reaching 33.2 km/h.
What is the warmest month in Somanda?
The warmest month in Somanda is October (24.5 °C on average); the coldest is January (21.7 °C).
How much does it rain in Somanda?
Somanda receives on average 945 mm of precipitation per year, spread over about 119 rainy days.
Is it sunny in Somanda?
Somanda gets on average 10.9 hours of sunshine per day, roughly 3,979 hours per year over 1940-2025.
Are there tropical nights in Somanda?
Yes: Somanda has on average 17 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Somanda?
In Somanda, between 1940 and 2025, the highest apparent temperature reached 37.2 °C on 21 March 2016, and the lowest was 9.0 °C on 11 July 1944.
Compare Somanda with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Somanda