Geiro climate — normals and trends
Geiro (Tanzania) has a warm-summer mediterranean climate (Csb) under the Köppen-Geiger classification. Its mean annual temperature is 19.2 °C and it receives 1,070 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 (20.8 °C on average) and the coldest is July (16.6 °C). Rainfall peaks in January.
Geiro averages 0 frost days, 0 hot days (≥ 30 °C) and 172 rainy days per year.
Geiro has warmed by +1.1 °C between 1940 and 2025, or +0.12 °C per decade. This trend is statistically significant.
The hottest day of the period reached 32.4 °C (on 22 February 2000) and the coldest 8.0 °C (on 21 August 1974).
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
GeiroMorogoro
- coords
- -6.15°, 36.87°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
19.2°C
Average daily high
24.3°C
Average daily low
15.3°C
Annual rainfall
1,070mm
Sunshine / day
10.9h
Mean relative humidity
77%
Average peak wind
14.6km/h
Seasonal range
4.2°C
Frost days (< 0 °C)
0 d/yr
Hot days (≥ 30 °C)
0 d/yr
Rainy days (≥ 1 mm)
172 d/yr
Annual snowfall
0.0 cm
Average feels-like high
25.4 °C
Average feels-like low
15.7 °C
Average peak gust
38.4 km/h
Tropical nights (≥ 20 °C)
0 d/yr
Solar radiation
20.8 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.1 °C
since 1940
+0.1 °C per decade · r² = 0.54 · 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
32.4 °C
22 February 2000
Coldest day
8.0 °C
21 August 1974
Wettest day
57 mm
24 January 1970
Windiest day
26.4 km/h
24 July 2021
Strongest gust
70.6 km/h
13 March 1941
Hottest feels-like
35.0 °C
6 February 2003
Coldest feels-like
5.1 °C
27 July 1975
Sunniest day
12.4 h
10 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 | 25.9 °C | +0.3 °C | 157 mm | -47 mm |
| Feb | 27.1 °C | +1.4 °C | 91 mm | -86 mm |
| Mar | 26.2 °C | +0.9 °C | 176 mm | +0 mm |
| Apr | 24.9 °C | +0.9 °C | 140 mm | +12 mm |
| May | 23.5 °C | +0.6 °C | 67 mm | +9 mm |
| Jun | 22.4 °C | +0.3 °C | 24 mm | +7 mm |
| Jul | 21.8 °C | 0.0 °C | 12 mm | -2 mm |
| Aug | 23.0 °C | +0.5 °C | 7 mm | -8 mm |
| Sep | 25.4 °C | +1.3 °C | 5 mm | -8 mm |
| Oct | 26.4 °C | +0.8 °C | 16 mm | -10 mm |
| Nov | 28.3 °C | +2.0 °C | 28 mm | -40 mm |
| Dec | 27.5 °C | +1.6 °C | 133 mm | -40 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 Geiro?
Geiro has a warm-summer mediterranean climate (Köppen Csb). Over 1940-2025, the average annual temperature is 19.2 °C and it receives 1,070 mm of precipitation per year.
What is the hottest day ever recorded in Geiro?
The hottest day measured in Geiro between 1940 and 2025 was 22 February 2000, reaching 32.4 °C.
What is the coldest day in Geiro?
The coldest day measured in Geiro between 1940 and 2025 was 21 August 1974, at 8.0 °C.
Does it snow in Geiro?
Almost never: Geiro sees virtually no snow, with about 0 frost days per year.
Has the climate of Geiro warmed?
Yes: Geiro warmed by +1.1 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Geiro?
The wettest day measured in Geiro between 1940 and 2025 was 24 January 1970, with 57 mm of rain in 24 hours.
What was the windiest day in Geiro?
The windiest day measured in Geiro between 1940 and 2025 was 24 July 2021, with winds reaching 26.4 km/h.
What is the warmest month in Geiro?
The warmest month in Geiro is December (20.8 °C on average); the coldest is July (16.6 °C).
How much does it rain in Geiro?
Geiro receives on average 1,070 mm of precipitation per year, spread over about 172 rainy days.
Is it sunny in Geiro?
Geiro gets on average 10.9 hours of sunshine per day, roughly 3,979 hours per year over 1940-2025.
Are there tropical nights in Geiro?
Almost never: tropical nights (temperature staying above 20 °C) are virtually non-existent in Geiro.
What was the most extreme apparent temperature in Geiro?
In Geiro, between 1940 and 2025, the highest apparent temperature reached 35.0 °C on 6 February 2003, and the lowest was 5.1 °C on 27 July 1975.
Compare Geiro with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Geiro