Wewak climate — normals and trends
Wewak (Papua New Guinea) has a tropical rainforest climate (Af) under the Köppen-Geiger classification. Its mean annual temperature is 26.4 °C and it receives 2,511 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 December (26.7 °C on average) and the coldest is July (26.1 °C). Rainfall peaks in June.
Wewak averages 0 frost days, 0 hot days (≥ 30 °C) and 306 rainy days per year.
Wewak has warmed by +0.8 °C between 1940 and 2025, or +0.09 °C per decade. This trend is statistically significant.
The hottest day of the period reached 30.5 °C (on 5 December 2021) and the coldest 23.3 °C (on 21 July 2000).
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
WewakEast Sepik Province
- coords
- -3.55°, 143.63°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
26.4°C
Average daily high
27.5°C
Average daily low
25.4°C
Annual rainfall
2,511mm
Sunshine / day
9.3h
Mean relative humidity
85%
Average peak wind
18.3km/h
Seasonal range
0.6°C
Frost days (< 0 °C)
0 d/yr
Hot days (≥ 30 °C)
0 d/yr
Rainy days (≥ 1 mm)
306 d/yr
Annual snowfall
0.0 cm
Average feels-like high
32.5 °C
Average feels-like low
29.3 °C
Average peak gust
28.1 km/h
Tropical nights (≥ 20 °C)
365 d/yr
Solar radiation
17.3 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+0.8 °C
since 1940
+0.1 °C per decade · r² = 0.71 · 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
30.5 °C
5 December 2021
Coldest day
23.3 °C
21 July 2000
Wettest day
157 mm
1 June 2010
Windiest day
41.4 km/h
10 March 2015
Strongest gust
60.1 km/h
21 January 1952
Hottest feels-like
37.3 °C
3 December 2000
Coldest feels-like
24.7 °C
28 July 1999
Sunniest day
12.2 h
31 December 2008
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 | 28.4 °C | +0.8 °C | 197 mm | +51 mm |
| Feb | 28.3 °C | +0.8 °C | 253 mm | +97 mm |
| Mar | 28.3 °C | +0.8 °C | 252 mm | +77 mm |
| Apr | 28.0 °C | +0.4 °C | 240 mm | +23 mm |
| May | 28.3 °C | +0.6 °C | 307 mm | +56 mm |
| Jun | 27.9 °C | +0.5 °C | 404 mm | +140 mm |
| Jul | 27.7 °C | +0.6 °C | 332 mm | +80 mm |
| Aug | 27.5 °C | +0.3 °C | 441 mm | +222 mm |
| Sep | 28.1 °C | +0.8 °C | 312 mm | +93 mm |
| Oct | 28.2 °C | +0.7 °C | 283 mm | +63 mm |
| Nov | 28.3 °C | +0.6 °C | 267 mm | +60 mm |
| Dec | 28.3 °C | +0.5 °C | 284 mm | +99 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 Wewak?
Wewak has a tropical rainforest climate (Köppen Af). Over 1940-2025, the average annual temperature is 26.4 °C and it receives 2,511 mm of precipitation per year.
What is the hottest day ever recorded in Wewak?
The hottest day measured in Wewak between 1940 and 2025 was 5 December 2021, reaching 30.5 °C.
What is the coldest day in Wewak?
The coldest day measured in Wewak between 1940 and 2025 was 21 July 2000, at 23.3 °C.
Does it snow in Wewak?
Almost never: Wewak sees virtually no snow, with about 0 frost days per year.
Has the climate of Wewak warmed?
Yes: Wewak warmed by +0.8 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Wewak?
The wettest day measured in Wewak between 1940 and 2025 was 1 June 2010, with 157 mm of rain in 24 hours.
What was the windiest day in Wewak?
The windiest day measured in Wewak between 1940 and 2025 was 10 March 2015, with winds reaching 41.4 km/h.
What is the warmest month in Wewak?
The warmest month in Wewak is December (26.7 °C on average); the coldest is July (26.1 °C).
How much does it rain in Wewak?
Wewak receives on average 2,511 mm of precipitation per year, spread over about 306 rainy days.
Is it sunny in Wewak?
Wewak gets on average 9.3 hours of sunshine per day, roughly 3,395 hours per year over 1940-2025.
Are there tropical nights in Wewak?
Yes: Wewak has on average 365 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Wewak?
In Wewak, between 1940 and 2025, the highest apparent temperature reached 37.3 °C on 3 December 2000, and the lowest was 24.7 °C on 28 July 1999.
Compare Wewak with another city
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