Altamira climate — normals and trends
Altamira (Mexico) has a tropical savanna climate (Aw) under the Köppen-Geiger classification. Its mean annual temperature is 24.2 °C and it receives 799 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 June (27.5 °C on average) and the coldest is January (19.1 °C). Rainfall peaks in September.
Altamira averages 0 frost days, 110 hot days (≥ 30 °C) and 137 rainy days per year.
Altamira has warmed by +1.4 °C between 1940 and 2025, or +0.16 °C per decade. This trend is statistically significant.
The hottest day of the period reached 40.7 °C (on 5 May 1999) and the coldest 2.6 °C (on 24 December 1989).
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
AltamiraTamaulipas
- coords
- 22.39°, -97.94°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
24.2°C
Average daily high
27.5°C
Average daily low
21.4°C
Annual rainfall
799mm
Sunshine / day
10.3h
Mean relative humidity
79%
Average peak wind
18.7km/h
Seasonal range
8.4°C
Frost days (< 0 °C)
0 d/yr
Hot days (≥ 30 °C)
110 d/yr
Rainy days (≥ 1 mm)
137 d/yr
Annual snowfall
0.0 cm
Average feels-like high
30.9 °C
Average feels-like low
23.7 °C
Average peak gust
35.4 km/h
Tropical nights (≥ 20 °C)
248 d/yr
Solar radiation
17.9 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.4 °C
since 1940
+0.2 °C per decade · r² = 0.51 · 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
40.7 °C
5 May 1999
Coldest day
2.6 °C
24 December 1989
Wettest day
242 mm
10 October 1966
Windiest day
64.0 km/h
10 October 1966
Strongest gust
152.3 km/h
9 October 1966
Hottest feels-like
44.7 °C
9 May 2024
Coldest feels-like
-3.2 °C
11 January 1962
Sunniest day
13.0 h
13 May 1940
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 | 22.4 °C | -0.2 °C | 19 mm | -14 mm |
| Feb | 25.0 °C | +1.1 °C | 24 mm | -0 mm |
| Mar | 28.9 °C | +2.6 °C | 13 mm | -9 mm |
| Apr | 29.7 °C | +1.2 °C | 7 mm | -23 mm |
| May | 32.0 °C | +1.9 °C | 48 mm | +2 mm |
| Jun | 30.8 °C | +0.2 °C | 382 mm | +268 mm |
| Jul | 31.1 °C | +0.9 °C | 121 mm | +4 mm |
| Aug | 32.6 °C | +2.0 °C | 72 mm | -34 mm |
| Sep | 31.4 °C | +1.5 °C | 224 mm | +70 mm |
| Oct | 29.9 °C | +1.7 °C | 111 mm | +29 mm |
| Nov | 28.1 °C | +2.4 °C | 32 mm | -11 mm |
| Dec | 25.9 °C | +2.3 °C | 51 mm | +20 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 Altamira?
Altamira has a tropical savanna climate (Köppen Aw). Over 1940-2025, the average annual temperature is 24.2 °C and it receives 799 mm of precipitation per year.
What is the hottest day ever recorded in Altamira?
The hottest day measured in Altamira between 1940 and 2025 was 5 May 1999, reaching 40.7 °C.
What is the coldest day in Altamira?
The coldest day measured in Altamira between 1940 and 2025 was 24 December 1989, at 2.6 °C.
Does it snow in Altamira?
Almost never: Altamira sees virtually no snow, with about 0 frost days per year.
Has the climate of Altamira warmed?
Yes: Altamira warmed by +1.4 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Altamira?
The wettest day measured in Altamira between 1940 and 2025 was 10 October 1966, with 242 mm of rain in 24 hours.
What was the windiest day in Altamira?
The windiest day measured in Altamira between 1940 and 2025 was 10 October 1966, with winds reaching 64.0 km/h.
What is the warmest month in Altamira?
The warmest month in Altamira is June (27.5 °C on average); the coldest is January (19.1 °C).
How much does it rain in Altamira?
Altamira receives on average 799 mm of precipitation per year, spread over about 137 rainy days.
Is it sunny in Altamira?
Altamira gets on average 10.3 hours of sunshine per day, roughly 3,760 hours per year over 1940-2025.
Are there tropical nights in Altamira?
Yes: Altamira has on average 248 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Altamira?
In Altamira, between 1940 and 2025, the highest apparent temperature reached 44.7 °C on 9 May 2024, and the lowest was -3.2 °C on 11 January 1962.
Compare Altamira with another city
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Nearby cities
The climate around Altamira