San Luis Weather in May
What's the weather like in San Luis (Ancash) in May 2026?
The climate in San Luis during May can be summarized as cool and dry.
May is in the fall / autumn in San Luis and is typically the 6th warmest month of the year. Daytime maximum temperatures average around a cool 17°C (62°F), whilst at night 2°C (35°F) is normal.
| Daytime temperature | 16.7°C 62°F |
|---|---|
| Nightly temperature | 1.6°C 34.8°F |
| Average temperature | 9.1°C 48.4°F |
| Daily sunshine | 8.2 hrs |
| Avg rainfall | 25 mm 1 ins |
| Rainy days | 11 days |
| Sea temperature | 20.2°C 68.4°F |
| Humidity | 72% |
| Windspeed | 11.5kph 7 mph |
On average May is the 4th driest month of the year in San Luis with around 25mm 1 inches of rain making it a dry time to visit. This rainfall is typically spread over 11 days, although this may vary considerably.
On the flip side this corresponds to an average of 8.2 hours of sunshine per day.
May temperatures in San Luis
May rainfall
May hourly sunshine
The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in San Luis in May 2025.
Other monthly averages
San Luis weather stats
| Hottest month: | November | 16.5°C 61.7°F |
|---|---|---|
| Driest month: | July | 5mm 0.2ins |
| Sunniest month: | July | 9.2hrs |
| Coldest month: | July | 15.8°C 60.4°F |
| Wettest month: | March | 137mm 5.4ins |
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