Dededo Village climate — normals and trends
Dededo Village (Guam) has a tropical monsoon climate (Am) under the Köppen-Geiger classification. Its mean annual temperature is 26.9 °C and it receives 1,878 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 June (27.3 °C on average) and the coldest is February (26.1 °C). Rainfall peaks in August.
Dededo Village averages 0 frost days, 0 hot days (≥ 30 °C) and 249 rainy days per year.
Dededo Village has warmed by +0.7 °C between 1940 and 2025, or +0.09 °C per decade. This trend is statistically significant.
The hottest day of the period reached 30.0 °C (on 28 August 2024) and the coldest 23.3 °C (on 5 February 1978).
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
Dededo VillageDededo
- coords
- 13.52°, 144.84°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
26.9°C
Average daily high
27.5°C
Average daily low
26.1°C
Annual rainfall
1,878mm
Sunshine / day
10.8h
Mean relative humidity
82%
Average peak wind
28.6km/h
Seasonal range
1.2°C
Frost days (< 0 °C)
0 d/yr
Hot days (≥ 30 °C)
0 d/yr
Rainy days (≥ 1 mm)
249 d/yr
Annual snowfall
0.0 cm
Average feels-like high
31.0 °C
Average feels-like low
28.2 °C
Average peak gust
39.2 km/h
Tropical nights (≥ 20 °C)
365 d/yr
Solar radiation
20.4 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+0.7 °C
since 1940
+0.1 °C per decade · r² = 0.59 · 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
30.0 °C
28 August 2024
Coldest day
23.3 °C
5 February 1978
Wettest day
235 mm
8 December 2002
Windiest day
112.9 km/h
12 November 1962
Strongest gust
168.8 km/h
8 December 2002
Hottest feels-like
37.4 °C
4 September 1996
Coldest feels-like
17.7 °C
12 November 1962
Sunniest day
12.8 h
16 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 | 28.1 °C | +1.1 °C | 43 mm | -29 mm |
| Feb | 27.6 °C | +1.0 °C | 42 mm | -14 mm |
| Mar | 27.7 °C | +0.9 °C | 39 mm | -13 mm |
| Apr | 28.0 °C | +0.8 °C | 30 mm | -42 mm |
| May | 28.4 °C | +0.7 °C | 71 mm | -23 mm |
| Jun | 28.5 °C | +0.5 °C | 293 mm | +147 mm |
| Jul | 28.5 °C | +0.5 °C | 357 mm | +114 mm |
| Aug | 28.5 °C | +0.5 °C | 253 mm | -56 mm |
| Sep | 28.3 °C | +0.4 °C | 370 mm | +84 mm |
| Oct | 28.6 °C | +0.7 °C | 261 mm | -1 mm |
| Nov | 28.7 °C | +0.8 °C | 211 mm | +32 mm |
| Dec | 28.3 °C | +0.8 °C | 122 mm | +12 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 Dededo Village?
Dededo Village has a tropical monsoon climate (Köppen Am). Over 1940-2025, the average annual temperature is 26.9 °C and it receives 1,878 mm of precipitation per year.
What is the hottest day ever recorded in Dededo Village?
The hottest day measured in Dededo Village between 1940 and 2025 was 28 August 2024, reaching 30.0 °C.
What is the coldest day in Dededo Village?
The coldest day measured in Dededo Village between 1940 and 2025 was 5 February 1978, at 23.3 °C.
Does it snow in Dededo Village?
Almost never: Dededo Village sees virtually no snow, with about 0 frost days per year.
Has the climate of Dededo Village warmed?
Yes: Dededo Village warmed by +0.7 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Dededo Village?
The wettest day measured in Dededo Village between 1940 and 2025 was 8 December 2002, with 235 mm of rain in 24 hours.
What was the windiest day in Dededo Village?
The windiest day measured in Dededo Village between 1940 and 2025 was 12 November 1962, with winds reaching 112.9 km/h.
What is the warmest month in Dededo Village?
The warmest month in Dededo Village is June (27.3 °C on average); the coldest is February (26.1 °C).
How much does it rain in Dededo Village?
Dededo Village receives on average 1,878 mm of precipitation per year, spread over about 249 rainy days.
Is it sunny in Dededo Village?
Dededo Village gets on average 10.8 hours of sunshine per day, roughly 3,942 hours per year over 1940-2025.
Are there tropical nights in Dededo Village?
Yes: Dededo Village has on average 365 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Dededo Village?
In Dededo Village, between 1940 and 2025, the highest apparent temperature reached 37.4 °C on 4 September 1996, and the lowest was 17.7 °C on 12 November 1962.
Compare Dededo Village with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Dededo Village