| Average climate data for Rayong, Thailand | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Year |
| Average maximum temperature (°C) | 32 | 33 | 33 | 34 | 34 | 33 | 32 | 32 | 32 | 32 | 33 | 32 | 34 |
| Average minimum temperature (°C) | 22 | 24 | 26 | 27 | 27 | 27 | 27 | 26 | 25 | 24 | 23 | 21 | 21 |
| Average precipitation (mm) | 21 | 37 | 71 | 82 | 197 | 163 | 171 | 133 | 257 | 195 | 51 | 6 | 1,385 |
| Average rainfall days (days) | 2 | 4 | 4 | 6 | 15 | 13 | 12 | 14 | 17 | 15 | 8 | 1 | 111 |
| Average relative humidity (%) | 75 | 77 | 77 | 77 | 79 | 80 | 80 | 80 | 83 | 82 | 74 | 70 | 78 |
| Average water temperature (°C) | 27 | 28 | 28 | 30 | 30 | 30 | 29 | 29 | 29 | 29 | 29 | 28 | 29 |
| Average daily daylight hours (h) | 11 | 11 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 11 | 11 | 11 | 12 |
The warmest month, with the highest average maximum temperature, is April (34.3 °C). The month with the lowest average maximum temperature is December (31.9 °C). Overall, the average maximum temperature over the whole year is 32.6 °C.
The month with the highest average minimum temperature is April (27 °C). The coldest month, with the lowest average minimum temperature, is December (21.4 °C). Overall, the average minimum temperature over the whole year is 25 °C.
The month with the highest average water temperature is May (30.1 °C). The month with the lowest average water temperature is January (27.4 °C). Overall, the average water temperature over the whole year is 29 °C.
The wettest month, with the highest amount of precipitation, is September (257.4 mm). The driest month, with the least amount of precipitation, is December (5.9 mm). Over the whole year there are 1,384.5 mm of rainfall on average.
The month with the most days of rain is September (17.1 days). The month with the fewest days of rain is December (0.9 days). Over the whole year there are 110.7 days of rain on average.
The month with the highest average relative humidity is September (83.1 %). The month with the lowest average relative humidity is December (70 %). The overall average relative humidity over the whole year is 77.8 %.
The months with the longest days, so the most daylight, are June and July (Average daylight: 12.1 h). The month with the shortest days, so the least daylight, is December (Average daylight: 11 h). Over the whole year there are 11.6 h of daylight per day on average.
