Weather in Ulaanbaatar in May 2025
- May is usually the driest month of the year in Ulaanbaatar
Average weather
Average temperature in Ulaanbaatar in May
Going from a maximum of +23°C during the day to a minimum of -2°C during the night, the temperature in May averages around +15°C.
The average maximum temperature goes down 28% by the end of the month, compared with the beginning of the month, from +22°C to +15°C.
Is Ulaanbaatar warm or cold in May?
Ulaanbaatar is typically mild in May.
Maximum temperatures go up compared to the previous month from +9°C to +17°C. The minimum temperature also goes up from -4°C to +4°C.
Pack a light jacket as it will be warm in the day and cool in the evenings.
Take a look at how May is compared to other months in Ulaanbaatar:
Climate in Ulaanbaatar in May
| April | May | June | ||||
|---|---|---|---|---|---|---|
| Avg. temperature | ||||||
| +9°C | +17°C | +22°C | ||||
| Min. temperature | ||||||
| -24°C | -12°C | -2°C | ||||
| Max. temperature | ||||||
| +29°C | +33°C | +37°C | ||||
| Rainfall | ||||||
| 8 mm | 26 mm | 55 mm | ||||
| Wind | ||||||
| 3 m/s | 3 m/s | 3 m/s | ||||
| Humidity | ||||||
| 49% | 48% | 56% | ||||
| Air pressure | ||||||
| 1013 HPa | 1010 HPa | 1007 HPa | ||||
| Sunny days | ||||||
| 8 | 6 | 4 | ||||
| Cloudy days | ||||||
| 12 | 11 | 8 | ||||
| Rainy days | ||||||
| 4 | 11 | 15 | ||||
| Snowy days | ||||||
| 6 | 2 | 0 | ||||
May typically has worse weather conditions compared to April. It’s getting warmer as May arrives. The average maximum temperature goes up from +9°C to +17°C during the day. Prepare for more rain. Average rainfall goes from 8 mm to 26 mm. It feels drier, as humidity decreases from 49% to 48%. The average wind speed doesn’t change much during May, staying around 3 m/s. The days becoming less sunny, going from 8 sunny days in April to 6 in May.
But maybe it is worth considering traveling in June as the weather gets better.
Wind
The average wind speed is 3 m/s getting up to 9 m/s which is a medium breeze. You can feel it, especially getting out of the water.
The average wind speed in Ulaanbaatar is gradually decreasing during May, going from 3 m/s to 2 m/s over the course of the month.
Rain
Snow
Here’s how May is compared with other months in the amount of snow, total mm:
How was the weather last May in Ulaanbaatar?
Climate Change over Years
The climate in Ulaanbaatar in May has not changed much over the last 43 years.
The average temperature was the lowest in 1985 (+4°C) and the highest in 2007 (+9°C). The driest year was 2017 with only 192 mm of rainfall, and the wettest year was 1984 with 432 mm.
FAQ
Is May a good time to visit Ulaanbaatar?
Can you sunbathe in Ulaanbaatar in May?
Is Ulaanbaatar rainy in May?
Is it sunny in Ulaanbaatar in May?
Monthly weather in Ulaanbaatar
Source of the data
For this page, we’ve looked at the typical weather in Ulaanbaatar, based on historical hourly weather data from January 1, 1979, to December 31, 2023.
For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.