Sullana climate — normals and trends
Sullana (Peru) has a hot desert climate (BWh) under the Köppen-Geiger classification. Its mean annual temperature is 23.6 °C and it receives 288 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 March (26.7 °C on average) and the coldest is August (20.9 °C). Rainfall peaks in March.
Sullana averages 0 frost days, 200 hot days (≥ 30 °C) and 42 rainy days per year.
Sullana has warmed by +1.1 °C between 1940 and 2025, or +0.13 °C per decade. This trend is statistically significant.
The hottest day of the period reached 37.9 °C (on 3 March 1991) and the coldest 12.0 °C (on 31 October 1950).
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
SullanaPiura
- coords
- -4.90°, -80.69°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
23.6°C
Average daily high
30.5°C
Average daily low
19.3°C
Annual rainfall
288mm
Sunshine / day
10.9h
Mean relative humidity
68%
Average peak wind
18.9km/h
Seasonal range
5.8°C
Frost days (< 0 °C)
0 d/yr
Hot days (≥ 30 °C)
200 d/yr
Rainy days (≥ 1 mm)
42 d/yr
Annual snowfall
0.0 cm
Average feels-like high
32.7 °C
Average feels-like low
20.8 °C
Average peak gust
37.9 km/h
Tropical nights (≥ 20 °C)
142 d/yr
Solar radiation
21.6 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.1 °C
since 1940
+0.1 °C per decade · r² = 0.16 · 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
37.9 °C
3 March 1991
Coldest day
12.0 °C
31 October 1950
Wettest day
163 mm
29 January 1998
Windiest day
29.5 km/h
15 April 1962
Strongest gust
56.5 km/h
15 April 1962
Hottest feels-like
42.4 °C
19 February 2024
Coldest feels-like
11.3 °C
31 October 1950
Sunniest day
12.3 h
22 December 1940
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 | 32.8 °C | +0.3 °C | 24 mm | -13 mm |
| Feb | 33.3 °C | +0.2 °C | 104 mm | +45 mm |
| Mar | 34.0 °C | +0.8 °C | 138 mm | +40 mm |
| Apr | 31.9 °C | -0.8 °C | 86 mm | +36 mm |
| May | 31.7 °C | +0.5 °C | 21 mm | +9 mm |
| Jun | 28.8 °C | -0.3 °C | 2 mm | -2 mm |
| Jul | 28.2 °C | +0.4 °C | 0 mm | -3 mm |
| Aug | 27.6 °C | -0.1 °C | 0 mm | -0 mm |
| Sep | 28.5 °C | +0.1 °C | 3 mm | +1 mm |
| Oct | 29.0 °C | 0.0 °C | 11 mm | +7 mm |
| Nov | 29.7 °C | 0.0 °C | 28 mm | +23 mm |
| Dec | 30.5 °C | -0.6 °C | 3 mm | -11 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 Sullana?
Sullana has a hot desert climate (Köppen BWh). Over 1940-2025, the average annual temperature is 23.6 °C and it receives 288 mm of precipitation per year.
What is the hottest day ever recorded in Sullana?
The hottest day measured in Sullana between 1940 and 2025 was 3 March 1991, reaching 37.9 °C.
What is the coldest day in Sullana?
The coldest day measured in Sullana between 1940 and 2025 was 31 October 1950, at 12.0 °C.
Does it snow in Sullana?
Almost never: Sullana sees virtually no snow, with about 0 frost days per year.
Has the climate of Sullana warmed?
Yes: Sullana warmed by +1.1 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Sullana?
The wettest day measured in Sullana between 1940 and 2025 was 29 January 1998, with 163 mm of rain in 24 hours.
What was the windiest day in Sullana?
The windiest day measured in Sullana between 1940 and 2025 was 15 April 1962, with winds reaching 29.5 km/h.
What is the warmest month in Sullana?
The warmest month in Sullana is March (26.7 °C on average); the coldest is August (20.9 °C).
How much does it rain in Sullana?
Sullana receives on average 288 mm of precipitation per year, spread over about 42 rainy days.
Is it sunny in Sullana?
Sullana gets on average 10.9 hours of sunshine per day, roughly 3,979 hours per year over 1940-2025.
Are there tropical nights in Sullana?
Yes: Sullana has on average 142 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Sullana?
In Sullana, between 1940 and 2025, the highest apparent temperature reached 42.4 °C on 19 February 2024, and the lowest was 11.3 °C on 31 October 1950.
Compare Sullana with another city
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Nearby cities
The climate around Sullana