Aljustrel climate — normals and trends
Aljustrel (Portugal) has a hot-summer mediterranean climate (Csa) under the Köppen-Geiger classification. Its mean annual temperature is 16.5 °C and it receives 479 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 July (23.6 °C on average) and the coldest is January (9.8 °C). Rainfall peaks in December.
Aljustrel averages 3 frost days, 64 hot days (≥ 30 °C) and 69 rainy days per year.
Aljustrel has warmed by +1.0 °C between 1940 and 2025, or +0.12 °C per decade. This trend is statistically significant.
The number of frost days there went from about 5 to 1 per year over the period.
The hottest day of the period reached 45.1 °C (on 4 August 2018) and the coldest -4.6 °C (on 22 December 1978).
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
AljustrelBeja District
- coords
- 37.88°, -8.17°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
16.5°C
Average daily high
22.3°C
Average daily low
11.3°C
Annual rainfall
479mm
Sunshine / day
10.3h
Mean relative humidity
70%
Average peak wind
16.0km/h
Seasonal range
13.8°C
Frost days (< 0 °C)
3 d/yr
Hot days (≥ 30 °C)
64 d/yr
Rainy days (≥ 1 mm)
69 d/yr
Annual snowfall
0.1 cm
Average feels-like high
21.5 °C
Average feels-like low
9.9 °C
Average peak gust
33.8 km/h
Tropical nights (≥ 20 °C)
7 d/yr
Solar radiation
17.6 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.0 °C
since 1940
+0.1 °C per decade · r² = 0.23 · 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
45.1 °C
4 August 2018
Coldest day
-4.6 °C
22 December 1978
Wettest day
69 mm
12 January 1956
Windiest day
56.9 km/h
15 February 1941
Strongest gust
105.8 km/h
15 February 1941
Hottest feels-like
46.4 °C
1 August 2003
Coldest feels-like
-8.9 °C
22 December 1978
Snowiest day
1.8 cm
2 February 1954
Sunniest day
14.6 h
20 June 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 | 16.4 °C | +2.0 °C | 108 mm | +54 mm |
| Feb | 17.5 °C | +1.8 °C | 40 mm | -14 mm |
| Mar | 17.2 °C | -1.0 °C | 172 mm | +112 mm |
| Apr | 21.2 °C | +0.9 °C | 82 mm | +30 mm |
| May | 25.5 °C | +1.8 °C | 29 mm | -8 mm |
| Jun | 32.4 °C | +4.5 °C | 3 mm | -10 mm |
| Jul | 33.0 °C | +1.8 °C | 1 mm | -2 mm |
| Aug | 34.0 °C | +2.7 °C | 0 mm | -4 mm |
| Sep | 29.7 °C | +1.4 °C | 9 mm | -12 mm |
| Oct | 27.1 °C | +3.6 °C | 34 mm | -23 mm |
| Nov | 18.5 °C | +0.3 °C | 81 mm | +22 mm |
| Dec | 15.0 °C | -0.1 °C | 93 mm | +29 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 Aljustrel?
Aljustrel has a hot-summer mediterranean climate (Köppen Csa). Over 1940-2025, the average annual temperature is 16.5 °C and it receives 479 mm of precipitation per year.
What is the hottest day ever recorded in Aljustrel?
The hottest day measured in Aljustrel between 1940 and 2025 was 4 August 2018, reaching 45.1 °C.
What is the coldest day in Aljustrel?
The coldest day measured in Aljustrel between 1940 and 2025 was 22 December 1978, at -4.6 °C.
Does it snow in Aljustrel?
Almost never: Aljustrel sees virtually no snow, with about 3 frost days per year.
Has the climate of Aljustrel warmed?
Yes: Aljustrel warmed by +1.0 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Aljustrel?
The wettest day measured in Aljustrel between 1940 and 2025 was 12 January 1956, with 69 mm of rain in 24 hours.
What was the windiest day in Aljustrel?
The windiest day measured in Aljustrel between 1940 and 2025 was 15 February 1941, with winds reaching 56.9 km/h.
What is the warmest month in Aljustrel?
The warmest month in Aljustrel is July (23.6 °C on average); the coldest is January (9.8 °C).
How much does it rain in Aljustrel?
Aljustrel receives on average 479 mm of precipitation per year, spread over about 69 rainy days.
Is it sunny in Aljustrel?
Aljustrel gets on average 10.3 hours of sunshine per day, roughly 3,760 hours per year over 1940-2025.
What is the biggest single-day snowfall in Aljustrel?
The heaviest 24-hour snowfall measured in Aljustrel between 1940 and 2025 was 2 February 1954, with 1.8 cm.
Are there tropical nights in Aljustrel?
Yes: Aljustrel has on average 7 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Aljustrel?
In Aljustrel, between 1940 and 2025, the highest apparent temperature reached 46.4 °C on 1 August 2003, and the lowest was -8.9 °C on 22 December 1978.
Compare Aljustrel with another city
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Nearby cities
The climate around Aljustrel