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Alotau, Papua New Guinea climate
Af Tropical rainforest
Alotau has a remarkably steady tropical climate (Tropical rainforest, Köppen Af). The hottest month is January with an average daily high near 84°F, while the coldest is August averaging around 76°F at night. Precipitation is fairly even year-round, totalling about 118 inches.
Temperature & precipitation
Daily high–low temperature range with the monthly average, plus monthly precipitation · 1991–2020 normals · hover a month for the exact figuresHours of sunshine per day
Estimated sunny hours each month — daylight length × clear-sky fraction · 1991–2020 monthly cloud cover (NASA POWER)Alotau climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°F) | 84 | 84 | 84 | 83 | 82 | 80 | 79 | 79 | 80 | 81 | 83 | 84 |
| Avg temp (°F) | 83 | 83 | 82 | 81 | 80 | 79 | 78 | 77 | 78 | 80 | 81 | 82 |
| Avg low (°F) | 81 | 81 | 81 | 80 | 79 | 78 | 76 | 76 | 77 | 78 | 79 | 81 |
| Precipitation (in) | 12.2 | 11.8 | 12.1 | 11.2 | 10.5 | 10.2 | 7.8 | 7.8 | 8.2 | 8.8 | 8.0 | 9.7 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°F) | 84 | 84 | 84 | 83 | 82 | 80 |
| Avg temp (°F) | 83 | 83 | 82 | 81 | 80 | 79 |
| Avg low (°F) | 81 | 81 | 81 | 80 | 79 | 78 |
| Precipitation (in) | 12.2 | 11.8 | 12.1 | 11.2 | 10.5 | 10.2 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°F) | 79 | 79 | 80 | 81 | 83 | 84 |
| Avg temp (°F) | 78 | 77 | 78 | 80 | 81 | 82 |
| Avg low (°F) | 76 | 76 | 77 | 78 | 79 | 81 |
| Precipitation (in) | 7.8 | 7.8 | 8.2 | 8.8 | 8.0 | 9.7 |
How often — frequency of weather events
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Days with high ≥ 90°F (days) | — | — | 0.0 | — | — | — | — | — | — | — | — | — |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Days with high ≥ 90°F (days) | — | — | 0.0 | — | — | — |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Days with high ≥ 90°F (days) | — | — | — | — | — | — |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 74 | 75 | 75 | 70 | 70 | 71 | 74 | 69 | 67 | 63 | 59 | 63 |
| Relative humidity (%) | 79 | 80 | 81 | 82 | 84 | 84 | 83 | 83 | 82 | 82 | 80 | 79 |
| Wind speed (mph) | 8.1 | 8.1 | 8.4 | 9.6 | 11.5 | 12.4 | 13.3 | 12.9 | 12.5 | 11.1 | 9.6 | 8.0 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 74 | 75 | 75 | 70 | 70 | 71 |
| Relative humidity (%) | 79 | 80 | 81 | 82 | 84 | 84 |
| Wind speed (mph) | 8.1 | 8.1 | 8.4 | 9.6 | 11.5 | 12.4 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 74 | 69 | 67 | 63 | 59 | 63 |
| Relative humidity (%) | 83 | 83 | 82 | 82 | 80 | 79 |
| Wind speed (mph) | 13.3 | 12.9 | 12.5 | 11.1 | 9.6 | 8.0 |
Methodology & sources
Temperature & precipitation — modelled for this location from ERA5-Land reanalysis, a ~9 km global grid, because no long-record weather station is close enough to use.
Cloud, humidity, wind & sunshine — modelled estimates from NASA POWER, NASA's satellite-and-reanalysis climatology. This is the standard global source for atmospheric variables, which are not measured at most weather stations.