San Martín in December
7.6out of 10
Yes, a good time to go
Warm and comfortable: highs around 29°C. Frequent rain: about 11 rainy days.
29°CAvg high
20°CAvg low
11Rainy days (63 mm)
11:47 hDaylight
05:57Sunrise · 17:45 Sunset
Why this score
- Warm and comfortable: highs around 29°C
- Frequent rain: about 11 rainy days
- Rain varies a lot between years (±4.6 days)
What to wear and pack
- T-shirts and light layers
- Shorts or a light skirt
- Rain jacket or compact umbrella
- Sunscreen, sunglasses and a hat
How reliable is the forecast?
Rain in December varies a lot between years (±4.6 rainy days), so check the forecast closer to your trip. Averages cover 30 years (1991–2020). Individual days can differ a lot.
Year at a glance
Weather by month
| Month | Avg high | Avg low | Rainfall | Rainy days | Humidity | Sunshine | Score |
|---|---|---|---|---|---|---|---|
| January | 30°C | 20°C | 36 mm | 7 | – | – | 7.8 |
| February | 31°C | 20°C | 57 mm | 8 | – | – | 7.5 |
| March | 30°C | 20°C | 150 mm | 15 | – | – | 6.5 |
| April | 28°C | 20°C | 275 mm | 24 | – | – | 6.1 |
| May | 28°C | 20°C | 351 mm | 27 | – | – | 6.1 |
| June | 27°C | 19°C | 355 mm | 26 | – | – | 6.1 |
| July | 26°C | 19°C | 369 mm | 27 | – | – | 6.1 |
| August | 27°C | 19°C | 235 mm | 24 | – | – | 6.1 |
| September | 29°C | 19°C | 173 mm | 22 | – | – | 6.1 |
| October | 29°C | 20°C | 168 mm | 21 | – | – | 6.1 |
| November | 29°C | 20°C | 160 mm | 19 | – | – | 6.2 |
| December | 29°C | 20°C | 63 mm | 11 | – | – | 7.6 |
Frequently asked questions
How hot is San Martín in December?
Daytime highs average 29°C and nights about 20°C.
When is the best time to visit San Martín?
The best months are January, December, February.