Cool
Average highs are around 15°C, so pack for cooler days.
September verdict
Mongolia in September
Weather score46Mixed
Mixed for holiday weather
Average highs are around 15°C, so pack for cooler days. Sunshine averages 8.4h per day, so bright days are a strong part of the month. Rainfall averages 28mm, which is relatively low for holiday planning.
September weather
Monthly averages
Temp
15°C
Rain
28mm
Sun
8.4h
Sea
0°C
Weather score
46
Mixed
Seasonal climate calendar
TemperatureTemp
RainRain
SunSun
SwimSwim
Weather scoreWeather score
Trip feel
Drier
Rainfall averages 28mm, which is relatively low for holiday planning.
Bright
Sunshine averages 8.4h per day, so bright days are a strong part of the month.
Cool sea
Sea temperatures average 0°C, so the water can feel cool.
Map
Weather map
Compare Mongolia with nearby places by weather score, rain, sun, temperature, and swim conditions.
Temperature
September15°C average high
September sits in the warmer part of the year, so midday sightseeing can feel heavier than in cooler months.
Warmest monthsMay to September
This stretch sets the upper range for average daytime heat.
Rain
September28mm average rain
September sits near Mongolia's yearly rainfall average, so rain is a normal planning factor rather than an outlier.
Driest monthsJanuary to May and September to December
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
Sun
September8.4 hours average sun
September is brighter than Mongolia's yearly average, though the strongest sunshine usually sits closer to the peak months.
Brightest monthsMay to August
This stretch has the strongest sunshine in the monthly averages.
Sea temperature
September0°C average sea
September is close to Mongolia'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.
Weather score
September46 weather score
September sits close to Mongolia's yearly weather-score average, giving a typical overall read on the month.
Best weather monthsMarch to August
These months have the strongest weather score in the monthly averages.