Climate Insights for Ko Pha Ngan

The climate in Ko Pha Ngan is hot. The average annual temperature is 27°C and approximately 242mm of precipitation falls per year. November is the wettest month, receiving around 33mm of rainfall. Ko Pha Ngan sits near the equator, so seasonal temperature differences are minimal throughout the year.

Ko Pha Ngan sees moderate temperature variation throughout the year, ranging from 21°C to 37°C. March is the hottest month, with daytime highs reaching 37°C and an average of 31°C. February is the coolest month, with minimum temperatures around 21°C and an average of 28°C. Daily temperature variation is modest, with an average difference of 6°C between highs and lows. The sharpest temperature change occurs between February and March, with a 3°C shift in average temperatures.

Ko Pha Ngan is a quite dry location, receiving approximately 242mm of precipitation annually, which averages out to around 20mm per month. The wettest month is May, averaging 33mm of rainfall. June and July also tend to see above-average precipitation. The driest month is October, with just 1mm. That's 31mm less than May, the wettest month. Rainfall is heavily concentrated in certain months, creating a distinct wet and dry season. Visitors should plan around these patterns, as the difference between peak and low months is dramatic.

Ko Pha Ngan is relatively calm, with an average annual wind speed of 4km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is December, averaging 7km/h, though still comfortable for most outdoor activities. The calmest conditions occur in May, with average winds dropping to 1km/h, making it an ideal period for wind-sensitive activities. Wind speeds vary significantly across the year, with a 6km/h difference between the calmest and windiest months. This level of variation is worth factoring into travel plans.

It is currently summer in Ko Pha Ngan, which began on June 21, 2026. Ko Pha Ngan sits near the equator, so the traditional four-season cycle is less pronounced. Temperatures remain relatively stable year-round. The warmest period peaks in March at around 37°C, while the coldest stretch bottoms out in February near 21°C. Autumn is next, beginning on September 23, 2026 (16 days from now).

The best time to visit Ko Pha Ngan is during October, November and December, when the weather is most comfortable for travellers. During these months, average temperatures hover around 24°C with modest rainfall averaging 15mm per month. By contrast, March can be uncomfortably hot with highs reaching 37°C, while February is the coldest period with lows dropping to 21°C. With minimal rainfall expected, you can pack light and plan outdoor activities with confidence.

The table below shows monthly climate averages for Ko Pha Ngan based on historical weather data. Min and max temperatures represent typical overnight lows and afternoon highs for each month, shown in degrees Celsius (°C). Precipitation is measured in millimetres (mm) and indicates the average total rainfall per month. Wind speed is the average sustained speed in kilometres per hour (km/h). All values are based on averages from over 10 years of historical weather data. The current month is highlighted for quick reference.