Arrifes climate — normals and trends
Arrifes (Portugal) has a warm-summer mediterranean climate (Csb) under the Köppen-Geiger classification. Its mean annual temperature is 17.4 °C and it receives 950 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 (21.7 °C on average) and the coldest is February (14.4 °C). Rainfall peaks in December.
Arrifes averages 0 frost days, 0 hot days (≥ 30 °C) and 136 rainy days per year.
Arrifes has warmed by +0.6 °C between 1940 and 2025, or +0.07 °C per decade. This trend is statistically significant.
The hottest day of the period reached 26.0 °C (on 17 August 2024) and the coldest 7.5 °C (on 22 January 1947).
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
ArrifesAzores
- coords
- 37.77°, -25.70°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
17.4°C
Average daily high
18.1°C
Average daily low
16.7°C
Annual rainfall
950mm
Sunshine / day
10.3h
Mean relative humidity
80%
Average peak wind
29.4km/h
Seasonal range
7.3°C
Frost days (< 0 °C)
0 d/yr
Hot days (≥ 30 °C)
0 d/yr
Rainy days (≥ 1 mm)
136 d/yr
Annual snowfall
0.0 cm
Average feels-like high
17.1 °C
Average feels-like low
14.2 °C
Average peak gust
40.2 km/h
Tropical nights (≥ 20 °C)
67 d/yr
Solar radiation
16.1 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+0.6 °C
since 1940
+0.1 °C per decade · r² = 0.19 · 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
26.0 °C
17 August 2024
Coldest day
7.5 °C
22 January 1947
Wettest day
77 mm
15 December 2006
Windiest day
102.5 km/h
14 December 1997
Strongest gust
154.4 km/h
14 December 1997
Hottest feels-like
30.2 °C
21 August 1988
Coldest feels-like
-3.4 °C
19 February 1966
Sunniest day
14.4 h
20 June 1943
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 | 17.6 °C | +1.9 °C | 155 mm | +33 mm |
| Feb | 16.5 °C | +1.4 °C | 179 mm | +75 mm |
| Mar | 15.0 °C | -0.2 °C | 122 mm | +16 mm |
| Apr | 15.8 °C | +0.2 °C | 94 mm | +23 mm |
| May | 17.2 °C | +0.4 °C | 71 mm | +13 mm |
| Jun | 19.9 °C | +1.0 °C | 16 mm | -20 mm |
| Jul | 21.8 °C | +0.7 °C | 14 mm | -6 mm |
| Aug | 23.0 °C | +0.6 °C | 33 mm | +2 mm |
| Sep | 21.9 °C | +0.1 °C | 42 mm | -20 mm |
| Oct | 21.4 °C | +1.4 °C | 153 mm | +48 mm |
| Nov | 18.2 °C | +0.2 °C | 89 mm | -15 mm |
| Dec | 16.8 °C | +0.2 °C | 124 mm | -5 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 Arrifes?
Arrifes has a warm-summer mediterranean climate (Köppen Csb). Over 1940-2025, the average annual temperature is 17.4 °C and it receives 950 mm of precipitation per year.
What is the hottest day ever recorded in Arrifes?
The hottest day measured in Arrifes between 1940 and 2025 was 17 August 2024, reaching 26.0 °C.
What is the coldest day in Arrifes?
The coldest day measured in Arrifes between 1940 and 2025 was 22 January 1947, at 7.5 °C.
Does it snow in Arrifes?
Almost never: Arrifes sees virtually no snow, with about 0 frost days per year.
Has the climate of Arrifes warmed?
Yes: Arrifes warmed by +0.6 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Arrifes?
The wettest day measured in Arrifes between 1940 and 2025 was 15 December 2006, with 77 mm of rain in 24 hours.
What was the windiest day in Arrifes?
The windiest day measured in Arrifes between 1940 and 2025 was 14 December 1997, with winds reaching 102.5 km/h.
What is the warmest month in Arrifes?
The warmest month in Arrifes is August (21.7 °C on average); the coldest is February (14.4 °C).
How much does it rain in Arrifes?
Arrifes receives on average 950 mm of precipitation per year, spread over about 136 rainy days.
Is it sunny in Arrifes?
Arrifes gets on average 10.3 hours of sunshine per day, roughly 3,760 hours per year over 1940-2025.
Are there tropical nights in Arrifes?
Yes: Arrifes has on average 67 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Arrifes?
In Arrifes, between 1940 and 2025, the highest apparent temperature reached 30.2 °C on 21 August 1988, and the lowest was -3.4 °C on 19 February 1966.
Compare Arrifes with another city
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Nearby cities
The climate around Arrifes