Climate Overview
The climate in Ranong is hot. The average annual temperature is 27°C and approximately 2513mm of precipitation falls per year. September is the wettest month, receiving around 454mm of rainfall. Ranong sits near the equator, so seasonal temperature differences are minimal throughout the year.
Temperature
Ranong has relatively stable temperatures year-round, staying within a 5°C range. The warmest month is March, when average highs reach 30°C and the mean temperature sits around 28°C. January is the coolest month, with minimum temperatures around 25°C and an average of 27°C. Daily temperature variation is modest, with an average difference of 3°C between highs and lows.
Precipitation
Ranong is a very wet location, receiving approximately 2513mm of precipitation annually, which averages out to around 209mm per month. The wettest month is September, averaging 454mm of rainfall. July and August also tend to see above-average precipitation. The driest month is February, with just 13mm. That's 441mm less than September, 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.
Wind
Ranong is moderately windy, with an average annual wind speed of 20km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is August, averaging 24km/h, noticeable enough to affect lighter outdoor activities. The calmest conditions occur in April, with average winds dropping to 17km/h, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 7km/h gap between the calmest and windiest months. Wind tends to pick up during the summer months. The seasonal averages are 20km/h in winter, 18km/h in spring, 24km/h in summer, 19km/h in autumn.
Seasons
89 days until Summer
It is currently spring in Ranong, which began on March 20, 2026. Ranong 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 30°C, while the coldest stretch bottoms out in January near 25°C. Summer is next, beginning on June 21, 2026 — 89 days from now.
Spring
Temperatures range from 26 to 30°C. Rainfall is heavy, totalling around 402mm across the season with a monthly average of 134mm. Winds are moderate at around 18km/h. An umbrella or waterproof jacket is advisable as spring showers are frequent.
Summer
Temperatures range from 26 to 28°C. Rainfall is heavy, totalling around 1009mm across the season with a monthly average of 336mm. Winds are moderate at around 24km/h. Light, breathable clothing is ideal — perfect conditions for outdoor activities.
Autumn
Temperatures range from 26 to 28°C. Rainfall is heavy, totalling around 939mm across the season with a monthly average of 313mm. Winds are moderate at around 19km/h. A waterproof jacket and sturdy footwear are recommended as rain becomes more frequent.
Winter
Temperatures range from 25 to 29°C. Precipitation is moderate at around 163mm for the season, averaging 54mm per month. Winds are moderate at around 20km/h. A light jacket or sweater is usually sufficient, though cooler evenings may call for an extra layer.
Monthly Climate Data
The table below shows monthly climate averages for Ranong 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.
