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Alo, Wallis and Futuna climate
Af Tropical rainforest
Alo has a remarkably steady tropical climate (Tropical rainforest, Köppen Af). The hottest month is March with an average daily high near 31°C, while the coldest is July averaging around 24°C at night. Around 3078 mm of precipitation falls each year, peaking in December (401 mm) and easing off in August (153 mm).
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)Alo climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 31 | 31 | 31 | 31 | 30 | 29 | 29 | 29 | 30 | 30 | 31 | 31 |
| Avg temp (°C) | 28 | 28 | 28 | 28 | 27 | 27 | 26 | 26 | 27 | 27 | 28 | 28 |
| Avg low (°C) | 25 | 25 | 25 | 25 | 25 | 25 | 24 | 24 | 24 | 24 | 24 | 25 |
| Precipitation (mm) | 312 | 347 | 327 | 290 | 223 | 172 | 162 | 153 | 191 | 215 | 286 | 401 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°C) | 31 | 31 | 31 | 31 | 30 | 29 |
| Avg temp (°C) | 28 | 28 | 28 | 28 | 27 | 27 |
| Avg low (°C) | 25 | 25 | 25 | 25 | 25 | 25 |
| Precipitation (mm) | 312 | 347 | 327 | 290 | 223 | 172 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°C) | 29 | 29 | 30 | 30 | 31 | 31 |
| Avg temp (°C) | 26 | 26 | 27 | 27 | 28 | 28 |
| Avg low (°C) | 24 | 24 | 24 | 24 | 24 | 25 |
| Precipitation (mm) | 162 | 153 | 191 | 215 | 286 | 401 |
How often — frequency of weather events
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 15 | 15 | 17 | 15 | 12 | 11 | 11 | 11 | 12 | 13 | 14 | 15 |
| Days with high ≥ 32°C (days) | 8 | 6 | 6 | 2 | 1 | 0.0 | — | 0.3 | 0.2 | 0.7 | 2 | 4 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 15 | 15 | 17 | 15 | 12 | 11 |
| Days with high ≥ 32°C (days) | 8 | 6 | 6 | 2 | 1 | 0.0 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 11 | 11 | 12 | 13 | 14 | 15 |
| Days with high ≥ 32°C (days) | — | 0.3 | 0.2 | 0.7 | 2 | 4 |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 80 | 79 | 75 | 71 | 68 | 67 | 65 | 66 | 67 | 71 | 73 | 80 |
| Relative humidity (%) | 82 | 82 | 82 | 82 | 80 | 80 | 80 | 80 | 81 | 81 | 82 | 82 |
| Wind speed (mph) | 10.7 | 10.5 | 9.9 | 10.7 | 11.9 | 13.6 | 13.9 | 13.8 | 13.6 | 12.6 | 11.3 | 10.9 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 80 | 79 | 75 | 71 | 68 | 67 |
| Relative humidity (%) | 82 | 82 | 82 | 82 | 80 | 80 |
| Wind speed (mph) | 10.7 | 10.5 | 9.9 | 10.7 | 11.9 | 13.6 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 65 | 66 | 67 | 71 | 73 | 80 |
| Relative humidity (%) | 80 | 80 | 81 | 81 | 82 | 82 |
| Wind speed (mph) | 13.9 | 13.8 | 13.6 | 12.6 | 11.3 | 10.9 |
Methodology & sources
Temperature & precipitation — 1991–2020 normals computed from 20 years of daily observations at Futuna Isl/maopoopo, a weather station, inside the city. The underlying daily records come from NOAA's global station network.
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.