Climate Insights for Nam Som

The climate in Nam Som is cool. The average annual temperature is 4°C and approximately 259mm of precipitation falls per year. October is the wettest month, receiving around 33mm of rainfall. Nam Som is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: April, March, May. The coldest months are January, February, June, when temperatures can drop to 0°C.

Nam Som has relatively stable temperatures year-round, staying within a 7°C range. April is the warmest month, though highs remain moderate at 7°C with a mean of 7°C. The coldest month is January, when overnight lows fall to 0°C and the daily average is 0°C. Daily temperature variation is modest, with an average difference of 1°C between highs and lows. The sharpest temperature change occurs between February and March, with a 4°C shift in average temperatures.

Nam Som is a quite dry location, receiving approximately 259mm of precipitation annually, which averages out to around 22mm per month. The wettest month is March, averaging 33mm of rainfall. April and May also tend to see above-average precipitation. The driest month is January, with just 2mm. That's 30mm less than March, 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.

Nam Som 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 January, averaging 7km/h, though still comfortable for most outdoor activities. The calmest conditions occur in June, with average winds dropping to 2km/h, making it an ideal period for wind-sensitive activities. Wind speeds vary significantly across the year, with a 5km/h difference between the calmest and windiest months. This level of variation is worth factoring into travel plans. Wind tends to be stronger during winter months, driven by seasonal pressure systems. The seasonal averages break down to 6km/h in winter, 4km/h in spring, 3km/h in summer, 3km/h in autumn.

It is currently summer in Nam Som, which began on June 21, 2026. Nam Som is in the Northern Hemisphere, where spring begins in March, summer in June, autumn in September, and winter in December. The warmest period peaks in April at around 7°C, while the coldest stretch bottoms out in January near 0°C. Autumn is next, beginning on September 23, 2026 — 16 days from now.

The table below shows monthly climate averages for Nam Som 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.