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Samut Songkhram, Thailand climate
Aw Tropical savanna (dry winter)
Samut Songkhram has a remarkably steady tropical climate (Tropical savanna (dry winter), Köppen Aw). The hottest month is May with an average daily high near 93°F, while the coldest is January averaging around 71°F at night. Precipitation totals about 38 inches a year and is strongly seasonal — October alone averages 10.3 inches while February barely receives 0.15 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)Samut Songkhram climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°F) | 87 | 89 | 90 | 93 | 93 | 92 | 91 | 91 | 91 | 89 | 89 | 87 |
| Avg temp (°F) | 79 | 81 | 84 | 86 | 86 | 86 | 85 | 85 | 84 | 83 | 82 | 79 |
| Avg low (°F) | 71 | 74 | 77 | 79 | 79 | 79 | 78 | 78 | 77 | 76 | 75 | 71 |
| Precipitation (in) | 0.7 | 0.1 | 1.5 | 1.6 | 3.8 | 3.5 | 3.5 | 3.6 | 6.1 | 10.3 | 2.6 | 0.5 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°F) | 87 | 89 | 90 | 93 | 93 | 92 |
| Avg temp (°F) | 79 | 81 | 84 | 86 | 86 | 86 |
| Avg low (°F) | 71 | 74 | 77 | 79 | 79 | 79 |
| Precipitation (in) | 0.7 | 0.1 | 1.5 | 1.6 | 3.8 | 3.5 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°F) | 91 | 91 | 91 | 89 | 89 | 87 |
| Avg temp (°F) | 85 | 85 | 84 | 83 | 82 | 79 |
| Avg low (°F) | 78 | 78 | 77 | 76 | 75 | 71 |
| Precipitation (in) | 3.5 | 3.6 | 6.1 | 10.3 | 2.6 | 0.5 |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 48 | 42 | 52 | 63 | 84 | 89 | 90 | 92 | 91 | 82 | 63 | 54 |
| Relative humidity (%) | 72 | 70 | 70 | 70 | 75 | 77 | 78 | 78 | 81 | 83 | 80 | 74 |
| Wind speed (mph) | 5.3 | 6.1 | 6.5 | 6.2 | 5.7 | 6.2 | 6.6 | 6.4 | 5.0 | 4.8 | 5.9 | 6.1 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 48 | 42 | 52 | 63 | 84 | 89 |
| Relative humidity (%) | 72 | 70 | 70 | 70 | 75 | 77 |
| Wind speed (mph) | 5.3 | 6.1 | 6.5 | 6.2 | 5.7 | 6.2 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 90 | 92 | 91 | 82 | 63 | 54 |
| Relative humidity (%) | 78 | 78 | 81 | 83 | 80 | 74 |
| Wind speed (mph) | 6.6 | 6.4 | 5.0 | 4.8 | 5.9 | 6.1 |
Methodology & sources
Temperature & precipitation — 1991–2020 normals computed from 27 years of daily observations at Phetchaburi, a weather station, about 47 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.