Alpiarça climate — normals and trends
Alpiarça (Portugal) has a hot-summer mediterranean climate (Csa) under the Köppen-Geiger classification. Its mean annual temperature is 16.0 °C and it receives 571 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 (22.8 °C on average) and the coldest is January (9.6 °C). Rainfall peaks in December.
Alpiarça averages 3 frost days, 54 hot days (≥ 30 °C) and 80 rainy days per year.
Alpiarça has warmed by +1.2 °C between 1940 and 2025, or +0.14 °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 45.6 °C (on 1 August 2003) and the coldest -6.3 °C (on 15 January 1945).
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
AlpiarçaSantarém District
- coords
- 39.26°, -8.58°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
16.0°C
Average daily high
21.6°C
Average daily low
11.3°C
Annual rainfall
571mm
Sunshine / day
10.2h
Mean relative humidity
71%
Average peak wind
19.0km/h
Seasonal range
13.2°C
Frost days (< 0 °C)
3 d/yr
Hot days (≥ 30 °C)
54 d/yr
Rainy days (≥ 1 mm)
80 d/yr
Annual snowfall
0.2 cm
Average feels-like high
20.3 °C
Average feels-like low
9.6 °C
Average peak gust
37.1 km/h
Tropical nights (≥ 20 °C)
7 d/yr
Solar radiation
16.8 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.2 °C
since 1940
+0.1 °C per decade · r² = 0.14 · 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
45.6 °C
1 August 2003
Coldest day
-6.3 °C
15 January 1945
Wettest day
65 mm
13 November 2025
Windiest day
61.7 km/h
15 February 1941
Strongest gust
110.2 km/h
30 December 1981
Hottest feels-like
46.1 °C
1 August 2003
Coldest feels-like
-10.7 °C
15 January 1945
Snowiest day
4.6 cm
29 January 2006
Sunniest day
14.8 h
14 June 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 | 15.7 °C | +2.0 °C | 141 mm | +69 mm |
| Feb | 16.5 °C | +1.4 °C | 43 mm | -23 mm |
| Mar | 17.0 °C | -0.8 °C | 171 mm | +105 mm |
| Apr | 20.5 °C | +0.7 °C | 106 mm | +53 mm |
| May | 24.9 °C | +1.8 °C | 33 mm | -10 mm |
| Jun | 31.4 °C | +4.1 °C | 6 mm | -10 mm |
| Jul | 32.4 °C | +2.0 °C | 1 mm | -4 mm |
| Aug | 33.3 °C | +2.9 °C | 1 mm | -6 mm |
| Sep | 28.0 °C | +0.4 °C | 17 mm | -11 mm |
| Oct | 26.0 °C | +3.4 °C | 40 mm | -26 mm |
| Nov | 17.4 °C | +0.2 °C | 184 mm | +109 mm |
| Dec | 14.5 °C | +0.3 °C | 100 mm | +24 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 Alpiarça?
Alpiarça has a hot-summer mediterranean climate (Köppen Csa). Over 1940-2025, the average annual temperature is 16.0 °C and it receives 571 mm of precipitation per year.
What is the hottest day ever recorded in Alpiarça?
The hottest day measured in Alpiarça between 1940 and 2025 was 1 August 2003, reaching 45.6 °C.
What is the coldest day in Alpiarça?
The coldest day measured in Alpiarça between 1940 and 2025 was 15 January 1945, at -6.3 °C.
Does it snow in Alpiarça?
Almost never: Alpiarça sees virtually no snow, with about 3 frost days per year.
Has the climate of Alpiarça warmed?
Yes: Alpiarça warmed by +1.2 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Alpiarça?
The wettest day measured in Alpiarça between 1940 and 2025 was 13 November 2025, with 65 mm of rain in 24 hours.
What was the windiest day in Alpiarça?
The windiest day measured in Alpiarça between 1940 and 2025 was 15 February 1941, with winds reaching 61.7 km/h.
What is the warmest month in Alpiarça?
The warmest month in Alpiarça is July (22.8 °C on average); the coldest is January (9.6 °C).
How much does it rain in Alpiarça?
Alpiarça receives on average 571 mm of precipitation per year, spread over about 80 rainy days.
Is it sunny in Alpiarça?
Alpiarça gets on average 10.2 hours of sunshine per day, roughly 3,723 hours per year over 1940-2025.
What is the biggest single-day snowfall in Alpiarça?
The heaviest 24-hour snowfall measured in Alpiarça between 1940 and 2025 was 29 January 2006, with 4.6 cm.
Are there tropical nights in Alpiarça?
Yes: Alpiarça has on average 7 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Alpiarça?
In Alpiarça, between 1940 and 2025, the highest apparent temperature reached 46.1 °C on 1 August 2003, and the lowest was -10.7 °C on 15 January 1945.
Compare Alpiarça with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Alpiarça