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Climate month by month
Official 30-year averages (1991–2020) measured by the Thai Meteorological Department at its Ranong station. Source (TMD, PDF)
| Month | Day / Night | Rainfall | Rainy days | Humidity | Years of data |
|---|---|---|---|---|---|
| January | 32.5°C / 22.3°C | 41 mm | 5 | 73% | 30 |
| February | 33.7°C / 22.5°C | 20 mm | 4 | 70% | 30 |
| March | 34.7°C / 23.7°C | 78 mm | 7 | 72% | 30 |
| April | 34.5°C / 24.8°C | 154 mm | 12 | 76% | 30 |
| May | 32.7°C / 24.9°C | 486 mm | 24 | 82% | 30 |
| June | 31.4°C / 24.7°C | 638 mm | 24 | 84% | 30 |
| July | 30.9°C / 24.4°C | 706 mm | 25 | 85% | 30 |
| August | 30.7°C / 24.4°C | 772 mm | 26 | 85% | 30 |
| September | 30.6°C / 24.0°C | 679 mm | 25 | 86% | 30 |
| October | 31.1°C / 23.7°C | 421 mm | 23 | 85% | 30 |
| November | 31.6°C / 23.5°C | 130 mm | 14 | 80% | 30 |
| December | 31.6°C / 22.8°C | 59 mm | 8 | 75% | 30 |
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