Ulaanbaatar Weather in May
May in Ulaanbaatar brings moderate temperatures, with highs of 16°C (61°F) and nights dropping to 1°C (34°F). Expect some rainfall, with around 38 mm (1.5 in) typical for the month.
Rainfall in Ulaanbaatar in May
Climate statistics over the past 30 years suggest around 8 days of rain, with 38 mm (1.5 in) average for the month. Neither particularly heavy nor particularly frequent, the rain this month is about average. A light jacket should be enough on most wet days.
Temperature in Ulaanbaatar in May
In May, expect moderate temperatures in Ulaanbaatar, with highs of 16°C (61°F) and lows of 1°C (34°F) at night. This creates a mild day-to-night pattern that is generally easy to manage with the right clothing. With overnight lows of 1°C (34°F), nights are cold. The cold air does make for deep, comfortable sleep if you have enough blankets.
Sunshine in Ulaanbaatar in May
The days are predominantly sunny, with an estimated total of around 300 hours of sunshine. These sun-filled days are perfect for playing sports, visiting parks, or going for a bike ride.If your ideal day consists of dry skies and pleasant temperatures, June, July and August typically offer the best circumstances for Ulaanbaatar.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Mongolia, check out our Ulaanbaatar's climate page.
Ulaanbaatar Temperature in May
Min Temperature
1°C (34°F)
Max Temperature
16°C (61°F)
Chance of Rain
27%
Precipitation
38 mm (1.5 in)
Rainy days
8 days
Humidity
46%
Sunshine
300 hours
Percentage Sunshine
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Ulaanbaatar typically rise from around 14°C (57°F) at the start of May to approximately 19°C (66°F) by the end. Nights are cold, with lows typically ranging from -2°C (28°F) to 6°C (43°F).
Average temperatures in May
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in May
Historical weather for Ulaanbaatar in May
Browse day-by-day weather records for Ulaanbaatar spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Ulaanbaatar historical weather extremes in May
The extremes listed below come from historical weather data collected in Ulaanbaatar from 1993 through 2026.
- The warmest day in May was on May 29, 2007, with a maximum of 33°C (91°F).
- The lowest overnight temperature recorded in May was -15°C (5°F) (May 4, 2001).
Best Places in Mongolia in May
Find out more about the weather in Mongolia and which places have the best travel conditions in this month. See all of Mongolia in May →
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What to Wear in Ulaanbaatar in May
Pleasant temperatures in May mean you can pack light but flexibel pieces. Think cotton t-shirts, comfortable walking shorts, and one warmer layer for evenings. A light sweater or denim jacket works well. Pack a light rain jacket or compact umbrella for occasional showers. Don't forget sun protection, sunglasses, sunscreen, and a hat. These are all good ideas with this much sunshine.What To Do in Ulaanbaatar in May
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Mongolia, check out our Ulaanbaatar's climate page.
Temperature Rainfall Sunshine Humidity
See the full Ulaanbaatar climate overview or explore weather in Mongolia.
