Click on a day for an hourly weather forecast
The weather in Ulaanbaatar in May is very cold with temperatures between 3°C and 13°C, warm clothes are a must.
You can expect about 3 to 8 days of rain in Ulaanbaatar during the month of May. It’s a good idea to bring along your umbrella so that you don’t get caught in poor weather.
You can expect a few days of snow in Ulaanbaatar during May. It’s important to get out your snow boots and warm mittens to stay warm while you explore Ulaanbaatar.
Our weather forecast can give you a great sense of what weather to expect in Ulaanbaatar in May 2025.
If you’re planning to visit Ulaanbaatar in the near future, we highly recommend that you review the 14 day weather forecast for Ulaanbaatar before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | -17° / -26° | 1 | 21 | 9 | 3 mm | Awful | Ulaanbaatar in January |
| February | -14° / -25° | 3 | 17 | 9 | 6 mm | Awful | Ulaanbaatar in February |
| March | -5° / -15° | 4 | 16 | 11 | 15 mm | Awful | Ulaanbaatar in March |
| April | 6° / -3° | 4 | 18 | 9 | 26 mm | Awful | Ulaanbaatar in April |
| May | 13° / 3° | 4 | 21 | 6 | 47 mm | Bad | Ulaanbaatar in May |
| June | 20° / 10° | 8 | 21 | 1 | 84 mm | Ok | Ulaanbaatar in June |
| July | 22° / 13° | 8 | 23 | 0 | 114 mm | Ok | Ulaanbaatar in July |
| August | 20° / 10° | 8 | 23 | 0 | 99 mm | Ok | Ulaanbaatar in August |
| September | 13° / 4° | 4 | 23 | 3 | 46 mm | Bad | Ulaanbaatar in September |
| October | 3° / -4° | 3 | 20 | 8 | 19 mm | Awful | Ulaanbaatar in October |
| November | -8° / -16° | 3 | 16 | 11 | 13 mm | Awful | Ulaanbaatar in November |
| December | -15° / -24° | 2 | 19 | 10 | 4 mm | Awful | Ulaanbaatar in December |