Ometepec climate — normals and trends
Ometepec (Mexico) has a tropical savanna climate (Aw) under the Köppen-Geiger classification. Its mean annual temperature is 25.1 °C and it receives 1,704 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 May (27.3 °C on average) and the coldest is January (24.2 °C). Rainfall peaks in September.
Ometepec averages 0 frost days, 249 hot days (≥ 30 °C) and 171 rainy days per year.
Ometepec has warmed by +2.4 °C between 1940 and 2025, or +0.29 °C per decade. This trend is statistically significant.
The hottest day of the period reached 39.4 °C (on 16 May 1998) and the coldest 11.2 °C (on 9 January 1998).
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
OmetepecGuerrero
- coords
- 16.69°, -98.41°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
25.1°C
Average daily high
31.3°C
Average daily low
20.2°C
Annual rainfall
1,704mm
Sunshine / day
10.4h
Mean relative humidity
74%
Average peak wind
9.7km/h
Seasonal range
3.1°C
Frost days (< 0 °C)
0 d/yr
Hot days (≥ 30 °C)
249 d/yr
Rainy days (≥ 1 mm)
171 d/yr
Annual snowfall
0.0 cm
Average feels-like high
35.4 °C
Average feels-like low
22.4 °C
Average peak gust
29.5 km/h
Tropical nights (≥ 20 °C)
216 d/yr
Solar radiation
20.4 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.4 °C
since 1940
+0.3 °C per decade · r² = 0.79 · 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
39.4 °C
16 May 1998
Coldest day
11.2 °C
9 January 1998
Wettest day
236 mm
18 October 1955
Windiest day
23.9 km/h
22 June 1989
Strongest gust
78.8 km/h
22 June 1989
Hottest feels-like
43.5 °C
15 July 2024
Coldest feels-like
8.7 °C
13 January 1997
Sunniest day
12.9 h
30 May 2025
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 | 33.8 °C | +2.1 °C | 4 mm | -6 mm |
| Feb | 34.7 °C | +2.1 °C | 7 mm | +2 mm |
| Mar | 35.3 °C | +1.7 °C | 0 mm | -5 mm |
| Apr | 35.5 °C | +0.9 °C | 11 mm | +3 mm |
| May | 35.4 °C | +1.5 °C | 53 mm | -31 mm |
| Jun | 30.4 °C | +0.1 °C | 574 mm | +255 mm |
| Jul | 32.5 °C | +2.5 °C | 183 mm | -108 mm |
| Aug | 31.8 °C | +2.1 °C | 268 mm | -53 mm |
| Sep | 30.9 °C | +2.0 °C | 382 mm | +2 mm |
| Oct | 30.7 °C | +1.4 °C | 352 mm | +138 mm |
| Nov | 32.6 °C | +2.5 °C | 15 mm | -41 mm |
| Dec | 33.5 °C | +2.3 °C | 24 mm | +13 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 Ometepec?
Ometepec has a tropical savanna climate (Köppen Aw). Over 1940-2025, the average annual temperature is 25.1 °C and it receives 1,704 mm of precipitation per year.
What is the hottest day ever recorded in Ometepec?
The hottest day measured in Ometepec between 1940 and 2025 was 16 May 1998, reaching 39.4 °C.
What is the coldest day in Ometepec?
The coldest day measured in Ometepec between 1940 and 2025 was 9 January 1998, at 11.2 °C.
Does it snow in Ometepec?
Almost never: Ometepec sees virtually no snow, with about 0 frost days per year.
Has the climate of Ometepec warmed?
Yes: Ometepec warmed by +2.4 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Ometepec?
The wettest day measured in Ometepec between 1940 and 2025 was 18 October 1955, with 236 mm of rain in 24 hours.
What was the windiest day in Ometepec?
The windiest day measured in Ometepec between 1940 and 2025 was 22 June 1989, with winds reaching 23.9 km/h.
What is the warmest month in Ometepec?
The warmest month in Ometepec is May (27.3 °C on average); the coldest is January (24.2 °C).
How much does it rain in Ometepec?
Ometepec receives on average 1,704 mm of precipitation per year, spread over about 171 rainy days.
Is it sunny in Ometepec?
Ometepec gets on average 10.4 hours of sunshine per day, roughly 3,796 hours per year over 1940-2025.
Are there tropical nights in Ometepec?
Yes: Ometepec has on average 216 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Ometepec?
In Ometepec, between 1940 and 2025, the highest apparent temperature reached 43.5 °C on 15 July 2024, and the lowest was 8.7 °C on 13 January 1997.
Compare Ometepec with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Ometepec