Arawa climate — normals and trends
Arawa (Papua New Guinea) has a tropical rainforest climate (Af) under the Köppen-Geiger classification. Its mean annual temperature is 23.5 °C and it receives 4,115 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 January (23.8 °C on average) and the coldest is July (23.0 °C). Rainfall peaks in March.
Arawa averages 0 frost days, 0 hot days (≥ 30 °C) and 345 rainy days per year.
Arawa has warmed by +0.9 °C between 1940 and 2025, or +0.11 °C per decade. This trend is statistically significant.
The hottest day of the period reached 30.6 °C (on 21 October 2017) and the coldest 17.7 °C (on 15 August 1940).
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
ArawaBougainville
- coords
- -6.23°, 155.57°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
23.5°C
Average daily high
26.7°C
Average daily low
21.7°C
Annual rainfall
4,115mm
Sunshine / day
9.2h
Mean relative humidity
91%
Average peak wind
7.6km/h
Seasonal range
0.8°C
Frost days (< 0 °C)
0 d/yr
Hot days (≥ 30 °C)
0 d/yr
Rainy days (≥ 1 mm)
345 d/yr
Annual snowfall
0.0 cm
Average feels-like high
32.3 °C
Average feels-like low
25.5 °C
Average peak gust
28.6 km/h
Tropical nights (≥ 20 °C)
362 d/yr
Solar radiation
17.3 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+0.9 °C
since 1940
+0.1 °C per decade · r² = 0.75 · 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
30.6 °C
21 October 2017
Coldest day
17.7 °C
15 August 1940
Wettest day
305 mm
3 December 2000
Windiest day
22.4 km/h
5 January 1943
Strongest gust
84.6 km/h
9 March 1997
Hottest feels-like
38.3 °C
14 December 2018
Coldest feels-like
18.9 °C
15 August 1940
Sunniest day
12.4 h
18 December 1950
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 | +1.0 °C | 233 mm | -120 mm |
| Feb | 28.2 °C | +1.2 °C | 179 mm | -189 mm |
| Mar | 27.5 °C | +0.5 °C | 329 mm | -58 mm |
| Apr | 27.0 °C | +0.1 °C | 464 mm | +103 mm |
| May | 27.5 °C | +0.8 °C | 321 mm | +9 mm |
| Jun | 26.6 °C | +0.3 °C | 294 mm | -2 mm |
| Jul | 26.7 °C | +0.8 °C | 344 mm | +7 mm |
| Aug | 26.8 °C | +0.7 °C | 258 mm | -82 mm |
| Sep | 26.7 °C | +0.2 °C | 389 mm | +72 mm |
| Oct | 27.0 °C | +0.1 °C | 334 mm | -11 mm |
| Nov | 27.8 °C | +0.6 °C | 389 mm | +54 mm |
| Dec | 27.4 °C | +0.2 °C | 397 mm | +33 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 Arawa?
Arawa has a tropical rainforest climate (Köppen Af). Over 1940-2025, the average annual temperature is 23.5 °C and it receives 4,115 mm of precipitation per year.
What is the hottest day ever recorded in Arawa?
The hottest day measured in Arawa between 1940 and 2025 was 21 October 2017, reaching 30.6 °C.
What is the coldest day in Arawa?
The coldest day measured in Arawa between 1940 and 2025 was 15 August 1940, at 17.7 °C.
Does it snow in Arawa?
Almost never: Arawa sees virtually no snow, with about 0 frost days per year.
Has the climate of Arawa warmed?
Yes: Arawa warmed by +0.9 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Arawa?
The wettest day measured in Arawa between 1940 and 2025 was 3 December 2000, with 305 mm of rain in 24 hours.
What was the windiest day in Arawa?
The windiest day measured in Arawa between 1940 and 2025 was 5 January 1943, with winds reaching 22.4 km/h.
What is the warmest month in Arawa?
The warmest month in Arawa is January (23.8 °C on average); the coldest is July (23.0 °C).
How much does it rain in Arawa?
Arawa receives on average 4,115 mm of precipitation per year, spread over about 345 rainy days.
Is it sunny in Arawa?
Arawa gets on average 9.2 hours of sunshine per day, roughly 3,358 hours per year over 1940-2025.
Are there tropical nights in Arawa?
Yes: Arawa has on average 362 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Arawa?
In Arawa, between 1940 and 2025, the highest apparent temperature reached 38.3 °C on 14 December 2018, and the lowest was 18.9 °C on 15 August 1940.
Compare Arawa with another city
Pick a second city: its normals will be set against these, indicator by indicator.