Leiria climate — normals and trends
Leiria (Portugal) has a warm-summer mediterranean climate (Csb) under the Köppen-Geiger classification. Its mean annual temperature is 14.8 °C and it receives 768 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 August (20.1 °C on average) and the coldest is January (9.5 °C). Rainfall peaks in November.
Leiria averages 3 frost days, 15 hot days (≥ 30 °C) and 100 rainy days per year.
Leiria 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 6 to 0 per year over the period.
The hottest day of the period reached 40.2 °C (on 21 July 1941) and the coldest -4.6 °C (on 11 January 1941).
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
LeiriaLeiria District
- coords
- 39.74°, -8.81°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
14.8°C
Average daily high
19.4°C
Average daily low
10.8°C
Annual rainfall
768mm
Sunshine / day
10.3h
Mean relative humidity
77%
Average peak wind
20.1km/h
Seasonal range
10.6°C
Frost days (< 0 °C)
3 d/yr
Hot days (≥ 30 °C)
15 d/yr
Rainy days (≥ 1 mm)
100 d/yr
Annual snowfall
0.1 cm
Average feels-like high
18.4 °C
Average feels-like low
9.0 °C
Average peak gust
41.1 km/h
Tropical nights (≥ 20 °C)
2 d/yr
Solar radiation
16.8 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.0 °C
since 1940
+0.1 °C per decade · r² = 0.30 · 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
40.2 °C
21 July 1941
Coldest day
-4.6 °C
11 January 1941
Wettest day
87 mm
13 November 2025
Windiest day
63.3 km/h
15 February 1941
Strongest gust
123.8 km/h
19 January 2013
Hottest feels-like
42.5 °C
14 June 1981
Coldest feels-like
-9.3 °C
1 March 2005
Snowiest day
4.7 cm
23 February 1956
Sunniest day
14.8 h
17 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 | 15.1 °C | +1.9 °C | 198 mm | +101 mm |
| Feb | 15.9 °C | +1.6 °C | 51 mm | -39 mm |
| Mar | 16.0 °C | -0.5 °C | 197 mm | +111 mm |
| Apr | 19.1 °C | +1.1 °C | 154 mm | +81 mm |
| May | 21.6 °C | +1.3 °C | 39 mm | -20 mm |
| Jun | 26.1 °C | +2.7 °C | 7 mm | -17 mm |
| Jul | 27.3 °C | +1.6 °C | 2 mm | -5 mm |
| Aug | 27.3 °C | +1.4 °C | 1 mm | -9 mm |
| Sep | 24.4 °C | -0.2 °C | 33 mm | -6 mm |
| Oct | 23.2 °C | +2.2 °C | 89 mm | +4 mm |
| Nov | 16.6 °C | +0.2 °C | 274 mm | +174 mm |
| Dec | 14.1 °C | +0.4 °C | 148 mm | +48 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 Leiria?
Leiria has a warm-summer mediterranean climate (Köppen Csb). Over 1940-2025, the average annual temperature is 14.8 °C and it receives 768 mm of precipitation per year.
What is the hottest day ever recorded in Leiria?
The hottest day measured in Leiria between 1940 and 2025 was 21 July 1941, reaching 40.2 °C.
What is the coldest day in Leiria?
The coldest day measured in Leiria between 1940 and 2025 was 11 January 1941, at -4.6 °C.
Does it snow in Leiria?
Almost never: Leiria sees virtually no snow, with about 3 frost days per year.
Has the climate of Leiria warmed?
Yes: Leiria warmed by +1.0 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Leiria?
The wettest day measured in Leiria between 1940 and 2025 was 13 November 2025, with 87 mm of rain in 24 hours.
What was the windiest day in Leiria?
The windiest day measured in Leiria between 1940 and 2025 was 15 February 1941, with winds reaching 63.3 km/h.
What is the warmest month in Leiria?
The warmest month in Leiria is August (20.1 °C on average); the coldest is January (9.5 °C).
How much does it rain in Leiria?
Leiria receives on average 768 mm of precipitation per year, spread over about 100 rainy days.
Is it sunny in Leiria?
Leiria 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 Leiria?
The heaviest 24-hour snowfall measured in Leiria between 1940 and 2025 was 23 February 1956, with 4.7 cm.
Are there tropical nights in Leiria?
Yes: Leiria has on average 2 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Leiria?
In Leiria, between 1940 and 2025, the highest apparent temperature reached 42.5 °C on 14 June 1981, and the lowest was -9.3 °C on 1 March 2005.
Compare Leiria with another city
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Nearby cities
The climate around Leiria