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Cruz Bay, US Virgin Islands climate
Aw Tropical savanna (dry winter)
Cruz Bay has a remarkably steady tropical climate (Tropical savanna (dry winter), Köppen Aw). The hottest month is August with an average daily high near 90°F, while the coldest is January averaging around 73°F at night. Around 41 inches of precipitation falls each year, peaking in November (6.1 inches) and easing off in March (1.8 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)Cruz Bay climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°F) | 84 | 84 | 85 | 86 | 87 | 89 | 90 | 90 | 89 | 88 | 86 | 85 |
| Avg temp (°F) | 79 | 79 | 79 | 81 | 82 | 84 | 84 | 84 | 84 | 83 | 81 | 80 |
| Avg low (°F) | 73 | 73 | 73 | 75 | 77 | 79 | 79 | 79 | 79 | 78 | 76 | 74 |
| Precipitation (in) | 2.3 | 2.0 | 1.8 | 2.3 | 3.1 | 2.4 | 3.1 | 4.2 | 4.9 | 5.5 | 6.1 | 3.0 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°F) | 84 | 84 | 85 | 86 | 87 | 89 |
| Avg temp (°F) | 79 | 79 | 79 | 81 | 82 | 84 |
| Avg low (°F) | 73 | 73 | 73 | 75 | 77 | 79 |
| Precipitation (in) | 2.3 | 2.0 | 1.8 | 2.3 | 3.1 | 2.4 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°F) | 90 | 90 | 89 | 88 | 86 | 85 |
| Avg temp (°F) | 84 | 84 | 84 | 83 | 81 | 80 |
| Avg low (°F) | 79 | 79 | 79 | 78 | 76 | 74 |
| Precipitation (in) | 3.1 | 4.2 | 4.9 | 5.5 | 6.1 | 3.0 |
How often — frequency of weather events
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 14 | 12 | 9 | 10 | 11 | 10 | 13 | 15 | 14 | 16 | 17 | 16 |
| Days with high ≥ 90°F (days) | 1 | 2 | 3 | 4 | 5 | 10 | 14 | 15 | 12 | 7 | 2 | 2 |
| Days with low ≤ 32°F (days) | 0.0 | — | — | — | — | — | — | 0.0 | — | — | — | — |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 14 | 12 | 9 | 10 | 11 | 10 |
| Days with high ≥ 90°F (days) | 1 | 2 | 3 | 4 | 5 | 10 |
| Days with low ≤ 32°F (days) | 0.0 | — | — | — | — | — |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 13 | 15 | 14 | 16 | 17 | 16 |
| Days with high ≥ 90°F (days) | 14 | 15 | 12 | 7 | 2 | 2 |
| Days with low ≤ 32°F (days) | — | 0.0 | — | — | — | — |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 38 | 37 | 39 | 40 | 55 | 53 | 47 | 45 | 51 | 49 | 47 | 41 |
| Relative humidity (%) | 76 | 75 | 75 | 76 | 79 | 79 | 79 | 78 | 78 | 78 | 78 | 76 |
| Wind speed (mph) | 13.2 | 13.0 | 12.1 | 11.7 | 11.7 | 12.7 | 13.6 | 12.6 | 10.9 | 10.5 | 11.8 | 13.1 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 38 | 37 | 39 | 40 | 55 | 53 |
| Relative humidity (%) | 76 | 75 | 75 | 76 | 79 | 79 |
| Wind speed (mph) | 13.2 | 13.0 | 12.1 | 11.7 | 11.7 | 12.7 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 47 | 45 | 51 | 49 | 47 | 41 |
| Relative humidity (%) | 79 | 78 | 78 | 78 | 78 | 76 |
| Wind speed (mph) | 13.6 | 12.6 | 10.9 | 10.5 | 11.8 | 13.1 |
Methodology & sources
Temperature & precipitation — 1991–2020 normals computed from 27 years of daily observations at Cyril E King AP, a weather station, about 20 km from the city centre. 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.