San Lorenzo de Esmeraldas climate — normals and trends
San Lorenzo de Esmeraldas (Ecuador) has a tropical rainforest climate (Af) under the Köppen-Geiger classification. Its mean annual temperature is 24.8 °C and it receives 4,047 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 (25.3 °C on average) and the coldest is August (24.5 °C). Rainfall peaks in May.
San Lorenzo de Esmeraldas averages 0 frost days, 53 hot days (≥ 30 °C) and 314 rainy days per year.
San Lorenzo de Esmeraldas has warmed by +1.6 °C between 1940 and 2025, or +0.19 °C per decade. This trend is statistically significant.
The hottest day of the period reached 33.9 °C (on 18 May 2005) and the coldest 18.6 °C (on 10 August 1995).
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
San Lorenzo de EsmeraldasEsmeraldas
- coords
- 1.29°, -78.84°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
24.8°C
Average daily high
28.4°C
Average daily low
22.4°C
Annual rainfall
4,047mm
Sunshine / day
7.3h
Mean relative humidity
89%
Average peak wind
10.2km/h
Seasonal range
0.8°C
Frost days (< 0 °C)
0 d/yr
Hot days (≥ 30 °C)
53 d/yr
Rainy days (≥ 1 mm)
314 d/yr
Annual snowfall
0.0 cm
Average feels-like high
33.3 °C
Average feels-like low
26.5 °C
Average peak gust
26.3 km/h
Tropical nights (≥ 20 °C)
363 d/yr
Solar radiation
13.2 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.6 °C
since 1940
+0.2 °C per decade · r² = 0.62 · 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
33.9 °C
18 May 2005
Coldest day
18.6 °C
10 August 1995
Wettest day
215 mm
24 March 1983
Windiest day
26.9 km/h
29 January 1941
Strongest gust
59.4 km/h
29 January 1941
Hottest feels-like
41.8 °C
24 March 2024
Coldest feels-like
20.5 °C
31 August 1949
Sunniest day
12.0 h
24 October 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 | 29.4 °C | +1.1 °C | 344 mm | -51 mm |
| Feb | 29.1 °C | +0.4 °C | 622 mm | +276 mm |
| Mar | 30.5 °C | +1.4 °C | 341 mm | -41 mm |
| Apr | 29.9 °C | +0.9 °C | 673 mm | +223 mm |
| May | 29.2 °C | +0.4 °C | 594 mm | +114 mm |
| Jun | 28.7 °C | +0.5 °C | 447 mm | +69 mm |
| Jul | 28.7 °C | +0.7 °C | 227 mm | -112 mm |
| Aug | 28.0 °C | +0.1 °C | 238 mm | -39 mm |
| Sep | 27.9 °C | -0.1 °C | 240 mm | -30 mm |
| Oct | 27.9 °C | -0.2 °C | 219 mm | -44 mm |
| Nov | 27.8 °C | -0.4 °C | 293 mm | +96 mm |
| Dec | 28.4 °C | +0.1 °C | 42 mm | -227 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 San Lorenzo de Esmeraldas?
San Lorenzo de Esmeraldas has a tropical rainforest climate (Köppen Af). Over 1940-2025, the average annual temperature is 24.8 °C and it receives 4,047 mm of precipitation per year.
What is the hottest day ever recorded in San Lorenzo de Esmeraldas?
The hottest day measured in San Lorenzo de Esmeraldas between 1940 and 2025 was 18 May 2005, reaching 33.9 °C.
What is the coldest day in San Lorenzo de Esmeraldas?
The coldest day measured in San Lorenzo de Esmeraldas between 1940 and 2025 was 10 August 1995, at 18.6 °C.
Does it snow in San Lorenzo de Esmeraldas?
Almost never: San Lorenzo de Esmeraldas sees virtually no snow, with about 0 frost days per year.
Has the climate of San Lorenzo de Esmeraldas warmed?
Yes: San Lorenzo de Esmeraldas warmed by +1.6 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in San Lorenzo de Esmeraldas?
The wettest day measured in San Lorenzo de Esmeraldas between 1940 and 2025 was 24 March 1983, with 215 mm of rain in 24 hours.
What was the windiest day in San Lorenzo de Esmeraldas?
The windiest day measured in San Lorenzo de Esmeraldas between 1940 and 2025 was 29 January 1941, with winds reaching 26.9 km/h.
What is the warmest month in San Lorenzo de Esmeraldas?
The warmest month in San Lorenzo de Esmeraldas is March (25.3 °C on average); the coldest is August (24.5 °C).
How much does it rain in San Lorenzo de Esmeraldas?
San Lorenzo de Esmeraldas receives on average 4,047 mm of precipitation per year, spread over about 314 rainy days.
Is it sunny in San Lorenzo de Esmeraldas?
San Lorenzo de Esmeraldas gets on average 7.3 hours of sunshine per day, roughly 2,665 hours per year over 1940-2025.
Are there tropical nights in San Lorenzo de Esmeraldas?
Yes: San Lorenzo de Esmeraldas has on average 363 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in San Lorenzo de Esmeraldas?
In San Lorenzo de Esmeraldas, between 1940 and 2025, the highest apparent temperature reached 41.8 °C on 24 March 2024, and the lowest was 20.5 °C on 31 August 1949.
Compare San Lorenzo de Esmeraldas with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around San Lorenzo de Esmeraldas