Cool
Average highs are around 20°C, so pack for cooler days.
September verdict
Poor for holiday weather
Average highs are around 20°C, so pack for cooler days. Sunshine averages 5.4h per day, enough for a balanced month. Rainfall averages 239mm, so showers are a real planning factor.

Monthly averages
Temp
20°C
Rain
239mm
Sun
5.4h
Sea
0°C
Weather score
34
Poor
Cool
Average highs are around 20°C, so pack for cooler days.
Wet
Rainfall averages 239mm, so showers are a real planning factor.
Some sun
Sunshine averages 5.4h per day, enough for a balanced month.
Cool sea
Sea temperatures average 0°C, so the water can feel cool.
Map
Compare Bhutan with nearby places by weather score, rain, sun, temperature, and swim conditions.
September20°C average high
September is one of Bhutan's hottest months, so shade and slower afternoons matter.
Warmest monthsMay to September
This stretch sets the upper range for average daytime heat.
September239mm average rain
September sits near Bhutan's yearly rainfall average, so rain is a normal planning factor rather than an outlier.
Driest monthsJanuary to April and October to December
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
September5.4 hours average sun
September is below Bhutan's yearly sunshine average, so bright-day planning is less reliable than in peak months.
Brightest monthsJanuary to April and October to December
This stretch has the strongest sunshine in the monthly averages.
September0°C average sea
September is close to Bhutan's usual sea temperature, with limited seasonal change in the water.
Warmest seaAll year
Sea temperatures stay warm enough for easy swimming through the year.
September34 weather score
September scores below Bhutan's yearly average, so the weather trade-offs are more noticeable.
Best weather monthsJanuary to April and October to December
These months have the strongest weather score in the monthly averages.