Masasi climate — normals and trends
Masasi (Tanzania) has a hot semi-arid climate (BSh) under the Köppen-Geiger classification. Its mean annual temperature is 25.2 °C and it receives 692 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 November (27.2 °C on average) and the coldest is July (23.0 °C). Rainfall peaks in March.
Masasi averages 0 frost days, 221 hot days (≥ 30 °C) and 105 rainy days per year.
Masasi has warmed by +0.8 °C between 1940 and 2025, or +0.10 °C per decade. This trend is statistically significant.
The hottest day of the period reached 38.8 °C (on 24 December 1960) and the coldest 11.7 °C (on 7 July 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
MasasiMtwara
- coords
- -10.72°, 38.80°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
25.2°C
Average daily high
30.8°C
Average daily low
20.7°C
Annual rainfall
692mm
Sunshine / day
10.6h
Mean relative humidity
67%
Average peak wind
15.0km/h
Seasonal range
4.2°C
Frost days (< 0 °C)
0 d/yr
Hot days (≥ 30 °C)
221 d/yr
Rainy days (≥ 1 mm)
105 d/yr
Annual snowfall
0.0 cm
Average feels-like high
33.1 °C
Average feels-like low
22.9 °C
Average peak gust
32.5 km/h
Tropical nights (≥ 20 °C)
234 d/yr
Solar radiation
20.2 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+0.8 °C
since 1940
+0.1 °C per decade · r² = 0.24 · 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
38.8 °C
24 December 1960
Coldest day
11.7 °C
7 July 1965
Wettest day
193 mm
26 March 2014
Windiest day
35.1 km/h
13 March 1941
Strongest gust
67.7 km/h
13 March 1941
Hottest feels-like
41.8 °C
13 March 1988
Coldest feels-like
10.2 °C
7 July 1965
Sunniest day
12.6 h
11 December 2025
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 | 33.2 °C | +2.1 °C | 110 mm | -38 mm |
| Feb | 32.6 °C | +2.0 °C | 61 mm | -75 mm |
| Mar | 30.7 °C | +0.7 °C | 124 mm | -28 mm |
| Apr | 30.1 °C | +0.6 °C | 80 mm | -8 mm |
| May | 30.2 °C | +0.3 °C | 39 mm | +27 mm |
| Jun | 30.2 °C | +1.2 °C | 1 mm | -0 mm |
| Jul | 28.8 °C | +0.1 °C | 2 mm | +1 mm |
| Aug | 29.6 °C | -0.3 °C | 1 mm | -1 mm |
| Sep | 31.7 °C | +0.1 °C | 1 mm | -1 mm |
| Oct | 31.7 °C | -1.2 °C | 5 mm | -3 mm |
| Nov | 32.7 °C | -0.8 °C | 42 mm | +7 mm |
| Dec | 32.2 °C | -0.3 °C | 145 mm | +38 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 Masasi?
Masasi has a hot semi-arid climate (Köppen BSh). Over 1940-2025, the average annual temperature is 25.2 °C and it receives 692 mm of precipitation per year.
What is the hottest day ever recorded in Masasi?
The hottest day measured in Masasi between 1940 and 2025 was 24 December 1960, reaching 38.8 °C.
What is the coldest day in Masasi?
The coldest day measured in Masasi between 1940 and 2025 was 7 July 1965, at 11.7 °C.
Does it snow in Masasi?
Almost never: Masasi sees virtually no snow, with about 0 frost days per year.
Has the climate of Masasi warmed?
Yes: Masasi warmed by +0.8 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Masasi?
The wettest day measured in Masasi between 1940 and 2025 was 26 March 2014, with 193 mm of rain in 24 hours.
What was the windiest day in Masasi?
The windiest day measured in Masasi between 1940 and 2025 was 13 March 1941, with winds reaching 35.1 km/h.
What is the warmest month in Masasi?
The warmest month in Masasi is November (27.2 °C on average); the coldest is July (23.0 °C).
How much does it rain in Masasi?
Masasi receives on average 692 mm of precipitation per year, spread over about 105 rainy days.
Is it sunny in Masasi?
Masasi gets on average 10.6 hours of sunshine per day, roughly 3,869 hours per year over 1940-2025.
Are there tropical nights in Masasi?
Yes: Masasi has on average 234 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Masasi?
In Masasi, between 1940 and 2025, the highest apparent temperature reached 41.8 °C on 13 March 1988, and the lowest was 10.2 °C on 7 July 1965.
Compare Masasi with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Masasi