Arcozelo climate — normals and trends
Arcozelo (Portugal) has a warm-summer mediterranean climate (Csb) under the Köppen-Geiger classification. Its mean annual temperature is 15.3 °C and it receives 1,110 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 (20.3 °C on average) and the coldest is January (10.6 °C). Rainfall peaks in December.
Arcozelo averages 0 frost days, 1 hot days (≥ 30 °C) and 116 rainy days per year.
Arcozelo has warmed by +1.0 °C between 1940 and 2025, or +0.12 °C per decade. This trend is statistically significant.
The hottest day of the period reached 34.5 °C (on 21 July 1941) and the coldest -0.1 °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
ArcozeloPorto District
- coords
- 41.06°, -8.63°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
15.3°C
Average daily high
17.9°C
Average daily low
13.0°C
Annual rainfall
1,110mm
Sunshine / day
10.2h
Mean relative humidity
79%
Average peak wind
22.7km/h
Seasonal range
9.7°C
Frost days (< 0 °C)
0 d/yr
Hot days (≥ 30 °C)
1 d/yr
Rainy days (≥ 1 mm)
116 d/yr
Annual snowfall
0.1 cm
Average feels-like high
16.9 °C
Average feels-like low
11.1 °C
Average peak gust
37.0 km/h
Tropical nights (≥ 20 °C)
8 d/yr
Solar radiation
16.3 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.0 °C
since 1940
+0.1 °C per decade · r² = 0.34 · 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
34.5 °C
21 July 1941
Coldest day
-0.1 °C
11 January 1941
Wettest day
88 mm
5 October 1981
Windiest day
82.3 km/h
15 February 1941
Strongest gust
146.9 km/h
15 February 1941
Hottest feels-like
37.4 °C
21 July 1941
Coldest feels-like
-5.8 °C
1 March 2005
Snowiest day
1.8 cm
10 February 1960
Sunniest day
14.9 h
8 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 | 14.6 °C | +1.7 °C | 237 mm | +98 mm |
| Feb | 14.9 °C | +1.4 °C | 89 mm | -36 mm |
| Mar | 15.5 °C | +0.4 °C | 183 mm | +69 mm |
| Apr | 18.1 °C | +1.7 °C | 183 mm | +84 mm |
| May | 19.7 °C | +1.3 °C | 78 mm | -7 mm |
| Jun | 22.7 °C | +1.6 °C | 47 mm | +12 mm |
| Jul | 24.6 °C | +1.5 °C | 10 mm | -4 mm |
| Aug | 24.3 °C | +1.0 °C | 9 mm | -10 mm |
| Sep | 21.7 °C | -0.4 °C | 32 mm | -23 mm |
| Oct | 20.8 °C | +1.4 °C | 139 mm | +12 mm |
| Nov | 16.4 °C | +0.6 °C | 350 mm | +202 mm |
| Dec | 14.0 °C | +0.4 °C | 200 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 Arcozelo?
Arcozelo has a warm-summer mediterranean climate (Köppen Csb). Over 1940-2025, the average annual temperature is 15.3 °C and it receives 1,110 mm of precipitation per year.
What is the hottest day ever recorded in Arcozelo?
The hottest day measured in Arcozelo between 1940 and 2025 was 21 July 1941, reaching 34.5 °C.
What is the coldest day in Arcozelo?
The coldest day measured in Arcozelo between 1940 and 2025 was 11 January 1941, at -0.1 °C.
Does it snow in Arcozelo?
Almost never: Arcozelo sees virtually no snow, with about 0 frost days per year.
Has the climate of Arcozelo warmed?
Yes: Arcozelo warmed by +1.0 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Arcozelo?
The wettest day measured in Arcozelo between 1940 and 2025 was 5 October 1981, with 88 mm of rain in 24 hours.
What was the windiest day in Arcozelo?
The windiest day measured in Arcozelo between 1940 and 2025 was 15 February 1941, with winds reaching 82.3 km/h.
What is the warmest month in Arcozelo?
The warmest month in Arcozelo is August (20.3 °C on average); the coldest is January (10.6 °C).
How much does it rain in Arcozelo?
Arcozelo receives on average 1,110 mm of precipitation per year, spread over about 116 rainy days.
Is it sunny in Arcozelo?
Arcozelo 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 Arcozelo?
The heaviest 24-hour snowfall measured in Arcozelo between 1940 and 2025 was 10 February 1960, with 1.8 cm.
Are there tropical nights in Arcozelo?
Yes: Arcozelo has on average 8 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Arcozelo?
In Arcozelo, between 1940 and 2025, the highest apparent temperature reached 37.4 °C on 21 July 1941, and the lowest was -5.8 °C on 1 March 2005.
Compare Arcozelo with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Arcozelo