San in May
5.5out of 10
Possible, with caveats
Very hot: daytime highs around 39°C. Some rain: about 6 rainy days.
39°CAvg high
28°CAvg low
6Rainy days (20 mm)
12:37 hDaylight
05:57Sunrise · 18:34 Sunset
Why this score
- Very hot: daytime highs around 39°C
- Some rain: about 6 rainy days
What to wear and pack
- Light, breathable clothing
- Shorts or a light skirt
- Sunscreen, sunglasses and a hat
How reliable is the forecast?
Rain in May varies a lot between years (±3.2 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 | 32°C | 18°C | 1 mm | 0 | – | – | 8.3 |
| February | 35°C | 20°C | 0 mm | 0 | – | – | 7.4 |
| March | 38°C | 24°C | 1 mm | 0 | – | – | 6.5 |
| April | 40°C | 27°C | 9 mm | 3 | – | – | 5.8 |
| May | 39°C | 28°C | 20 mm | 6 | – | – | 5.5 |
| June | 36°C | 26°C | 43 mm | 10 | – | – | 5.6 |
| July | 33°C | 24°C | 123 mm | 17 | – | – | 5.5 |
| August | 31°C | 23°C | 196 mm | 21 | – | – | 5.6 |
| September | 32°C | 24°C | 107 mm | 15 | – | – | 6.1 |
| October | 35°C | 24°C | 26 mm | 6 | – | – | 6.6 |
| November | 36°C | 21°C | 0 mm | 0 | – | – | 7.2 |
| December | 33°C | 18°C | 0 mm | 0 | – | – | 8.1 |
Frequently asked questions
How hot is San in May?
Daytime highs average 39°C and nights about 28°C.
When is the best time to visit San?
The best months are January, December.