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Port Nelson, Bahamas climate
BSh Hot semi-arid
Port Nelson has a remarkably steady tropical climate (Hot semi-arid, Köppen BSh). The hottest month is August with an average daily high near 85°F, while the coldest is February averaging around 74°F at night. Precipitation totals about 23 inches a year and is strongly seasonal — October alone averages 3.3 inches while February barely receives 0.81 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)Port Nelson climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°F) | 76 | 76 | 77 | 78 | 80 | 83 | 84 | 85 | 84 | 83 | 80 | 78 |
| Avg temp (°F) | 75 | 75 | 75 | 77 | 79 | 82 | 83 | 84 | 83 | 82 | 79 | 77 |
| Avg low (°F) | 74 | 74 | 74 | 76 | 78 | 81 | 82 | 83 | 82 | 81 | 78 | 76 |
| Precipitation (in) | 1.3 | 0.8 | 0.8 | 1.4 | 2.5 | 2.5 | 2.0 | 2.4 | 2.8 | 3.3 | 2.5 | 1.3 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°F) | 76 | 76 | 77 | 78 | 80 | 83 |
| Avg temp (°F) | 75 | 75 | 75 | 77 | 79 | 82 |
| Avg low (°F) | 74 | 74 | 74 | 76 | 78 | 81 |
| Precipitation (in) | 1.3 | 0.8 | 0.8 | 1.4 | 2.5 | 2.5 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°F) | 84 | 85 | 84 | 83 | 80 | 78 |
| Avg temp (°F) | 83 | 84 | 83 | 82 | 79 | 77 |
| Avg low (°F) | 82 | 83 | 82 | 81 | 78 | 76 |
| Precipitation (in) | 2.0 | 2.4 | 2.8 | 3.3 | 2.5 | 1.3 |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 46 | 37 | 40 | 39 | 49 | 54 | 40 | 41 | 50 | 53 | 49 | 45 |
| Relative humidity (%) | 76 | 75 | 75 | 76 | 78 | 79 | 78 | 77 | 77 | 77 | 76 | 76 |
| Wind speed (mph) | 12.6 | 12.3 | 12.1 | 11.8 | 11.1 | 10.4 | 11.5 | 11.0 | 10.2 | 11.2 | 12.9 | 12.9 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 46 | 37 | 40 | 39 | 49 | 54 |
| Relative humidity (%) | 76 | 75 | 75 | 76 | 78 | 79 |
| Wind speed (mph) | 12.6 | 12.3 | 12.1 | 11.8 | 11.1 | 10.4 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 40 | 41 | 50 | 53 | 49 | 45 |
| Relative humidity (%) | 78 | 77 | 77 | 77 | 76 | 76 |
| Wind speed (mph) | 11.5 | 11.0 | 10.2 | 11.2 | 12.9 | 12.9 |
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.