San Juan vs Ulaanbaatar in December
San Juan is the better pick in December — 77 vs 28 on SeasonMap's comfort score. San Juan is hot, a little rain, clean air, while Ulaanbaatar is freezing, dry, poor air quality.
San Juan vs Ulaanbaatar — December climate, side by side
| San Juan | Ulaanbaatar | |
|---|---|---|
| Comfort score | 77/100 (B) | 28/100 (F) |
| Feels-like high | 31°C | -17°C |
| Avg high / low | 29° / 23° | -12° / -23° |
| Rainfall | 38 mm | 4 mm |
| Rainy days | 12 | 1 |
| Humidity | 80% | 70% |
| Air quality (AQI) | 32 | 122 |
Monthly climate normals (ERA5 reanalysis). Comfort scores are SeasonMap estimates.
San Juan vs Ulaanbaatar in December — FAQ
- Is December better in San Juan or Ulaanbaatar?
- San Juan is the better pick in December — 77 vs 28 on SeasonMap's comfort score. San Juan is hot, a little rain, clean air, while Ulaanbaatar is freezing, dry, poor air quality.
- What is the weather like in San Juan vs Ulaanbaatar in December?
- In December, San Juan averages 29°C high / 23°C low with about 38 mm of rain; Ulaanbaatar averages -12°C high / -23°C low with about 4 mm.