Weather in San José in September
It's a rainy period, but great for indoor activities, museums, and lower prices.
Climate Overview
September is a wet time to visit San José. San José has a Warm climate with average yearly highs of 25°C, lows of 16°C, and approximately 30 rainy days per month.
25°C
16°C
30days
12.2h
Is September a good time to visit San José?
It's a rainy period, but great for indoor activities, museums, and lower prices.
Daylight
5:27 AM
5:39 PM
Weather by Month
| Month | High | Low | Rainy days | Condition |
|---|---|---|---|---|
| January | 25°C | 17°C | 9 | Excellent (best) |
| February | 26°C | 16°C | 2 | Excellent (best) |
| March | 27°C | 16°C | 2 | Excellent (best) |
| April | 28°C | 17°C | 18 | Excellent (best) |
| May | 26°C | 18°C | 27 | Wet |
| June | 25°C | 17°C | 28 | Wet |
| July | 25°C | 17°C | 20 | Wet |
| August | 25°C | 17°C | 27 | Wet |
| September | 25°C | 16°C | 30 | Wet |
| October | 24°C | 17°C | 29 | Wet |
| November | 23°C | 17°C | 28 | Wet |
| December | 24°C | 16°C | 14 | Excellent (best) |
Weather data: Open-Meteo Archive (2020-2025) • Open-Meteo.com (CC BY 4.0) • Historical avg. 2020–2025
What to Pack for September
Lightweight clothes, sunglasses, sunscreen, and breathable fabrics.
Planning a trip to San José?
Common Questions
Is September a good time to visit San José? +
September is typically Wet for visiting San José, with average highs of 25°C and around 30 rainy days.
What should I pack for San José in September? +
With highs of 25°C and lows of 16°C in {month}, we recommend: Lightweight clothes, sunglasses, sunscreen, and breathable fabrics.
Does it rain a lot in San José in September? +
San José typically sees around 30 rainy days in September.
How many hours of daylight are there in San José in September? +
In September, San José gets approximately 12.2 hours of daylight per day.
Is September peak season in San José? +
No, September is not peak season in San José. Expect better value on accommodation and fewer tourists.
What is the best month to visit San José? +
The best months to visit San José are December, January, February, March, April, when the weather is optimal for sightseeing.
More San José Guides
Best Time to Visit
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Things to Do
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Itineraries
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Overview
Complete travel guide for San José: top things to do, itineraries, and typical costs.