Similan Islands Monthly Climate Averages
To help you choose the best time to travel, you can find climate data below on the weather on the Similan Islands .
| Month |  day |
 night |
 rain |
 |
| January | +32.8 | +21.5 | 39 | 12.1h |
| February | +33.5 | +21.8 | 41 | 12.2h |
| March | +34 | +22.8 | 115 | 12.4h |
| April | +34 | +23.9 | 210 | 12.7h |
| May | +32.7 | +24.3 | 438 | 12.9h |
| June | +32 | +24.4 | 424 | 13h |
| July | +31.7 | +24.2 | 430 | 12.9h |
| August | +31.4 | +24.3 | 545 | 12.8h |
| September | +31 | +23.6 | 596 | 12.5h |
| October | +31.2 | +23.3 | 518 | 12.3h |
| November | +31.8 | +22.9 | 241 | 12.1h |
| December | +32.1 | +22.1 | 62 | 12h |
High season with the best weather conditions for the beach leisure on the Similan Islands are typically January, February, December.
Temperature on the Similan Islands
The table shows that the hottest months on the Similan Islands are March and April, during which the average daytime temperature reaches +34°C and the nighttime temperature falls to +22.8°C.
The coldest months are September and October, when the daily average temperature falls to +31°C, and drops to +23.6°C during the night.
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Sea temperature
The month with the highest average monthly temperature in the Andaman Sea on the beaches of Similan Islands is April with 29 degrees.
The coldest water can be found in February — 27degrees C.
Similan Islands climate by month
Precipitation
The largest amount of precipitation falls on average in September and August, up to 596mm, and the least in January and February — up to 39mm.