Nanyamba climate — normals and trends
Nanyamba (Tanzania) has a tropical savanna climate (Aw) under the Köppen-Geiger classification. Its mean annual temperature is 24.4 °C and it receives 1,032 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 December (25.9 °C on average) and the coldest is July (22.4 °C). Rainfall peaks in January.
Nanyamba averages 0 frost days, 147 hot days (≥ 30 °C) and 149 rainy days per year.
Nanyamba has warmed by +0.9 °C between 1940 and 2025, or +0.10 °C per decade. This trend is statistically significant.
The hottest day of the period reached 36.6 °C (on 25 November 1943) and the coldest 13.3 °C (on 29 August 1952).
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
NanyambaMtwara
- coords
- -10.68°, 39.83°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
24.4°C
Average daily high
29.6°C
Average daily low
20.5°C
Annual rainfall
1,032mm
Sunshine / day
10.6h
Mean relative humidity
77%
Average peak wind
14.5km/h
Seasonal range
3.5°C
Frost days (< 0 °C)
0 d/yr
Hot days (≥ 30 °C)
147 d/yr
Rainy days (≥ 1 mm)
149 d/yr
Annual snowfall
0.0 cm
Average feels-like high
32.6 °C
Average feels-like low
23.3 °C
Average peak gust
32.8 km/h
Tropical nights (≥ 20 °C)
217 d/yr
Solar radiation
19.5 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+0.9 °C
since 1940
+0.1 °C per decade · r² = 0.47 · 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
36.6 °C
25 November 1943
Coldest day
13.3 °C
29 August 1952
Wettest day
237 mm
26 March 2014
Windiest day
38.9 km/h
13 March 1941
Strongest gust
75.2 km/h
13 March 1941
Hottest feels-like
41.3 °C
27 December 2015
Coldest feels-like
11.7 °C
18 July 1976
Sunniest day
12.6 h
5 January 2025
Normals computed over complete calendar years 1940–2025.
A specific year
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Across the whole year
Month by month
| High | vs. normal | Precipitation | vs. normal | |
|---|---|---|---|---|
| Jan | 31.2 °C | +1.2 °C | 192 mm | -29 mm |
| Feb | 30.7 °C | +0.8 °C | 121 mm | -81 mm |
| Mar | 30.0 °C | +0.5 °C | 188 mm | -13 mm |
| Apr | 29.1 °C | +0.2 °C | 144 mm | +31 mm |
| May | 28.9 °C | -0.1 °C | 69 mm | +44 mm |
| Jun | 28.6 °C | +0.1 °C | 8 mm | +3 mm |
| Jul | 27.9 °C | -0.3 °C | 4 mm | -1 mm |
| Aug | 28.9 °C | 0.0 °C | 4 mm | -2 mm |
| Sep | 29.8 °C | -0.1 °C | 11 mm | +1 mm |
| Oct | 30.2 °C | -0.5 °C | 23 mm | -3 mm |
| Nov | 30.5 °C | -0.7 °C | 76 mm | +15 mm |
| Dec | 30.4 °C | -0.3 °C | 153 mm | -5 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 Nanyamba?
Nanyamba has a tropical savanna climate (Köppen Aw). Over 1940-2025, the average annual temperature is 24.4 °C and it receives 1,032 mm of precipitation per year.
What is the hottest day ever recorded in Nanyamba?
The hottest day measured in Nanyamba between 1940 and 2025 was 25 November 1943, reaching 36.6 °C.
What is the coldest day in Nanyamba?
The coldest day measured in Nanyamba between 1940 and 2025 was 29 August 1952, at 13.3 °C.
Does it snow in Nanyamba?
Almost never: Nanyamba sees virtually no snow, with about 0 frost days per year.
Has the climate of Nanyamba warmed?
Yes: Nanyamba warmed by +0.9 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Nanyamba?
The wettest day measured in Nanyamba between 1940 and 2025 was 26 March 2014, with 237 mm of rain in 24 hours.
What was the windiest day in Nanyamba?
The windiest day measured in Nanyamba between 1940 and 2025 was 13 March 1941, with winds reaching 38.9 km/h.
What is the warmest month in Nanyamba?
The warmest month in Nanyamba is December (25.9 °C on average); the coldest is July (22.4 °C).
How much does it rain in Nanyamba?
Nanyamba receives on average 1,032 mm of precipitation per year, spread over about 149 rainy days.
Is it sunny in Nanyamba?
Nanyamba gets on average 10.6 hours of sunshine per day, roughly 3,869 hours per year over 1940-2025.
Are there tropical nights in Nanyamba?
Yes: Nanyamba has on average 217 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Nanyamba?
In Nanyamba, between 1940 and 2025, the highest apparent temperature reached 41.3 °C on 27 December 2015, and the lowest was 11.7 °C on 18 July 1976.
Compare Nanyamba with another city
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Nearby cities
The climate around Nanyamba