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San Juan weather in October 2025
Expect daytime maximum temperatures of 30°C in San Juan, Puerto Rico in October and high heat and humidity based on long-term weather averages. There are 7 hours of sunshine per day on average with 18 days with some rainfall and typically 171 mm of rainfall in the month.
- 30°C max day temperature
30 - 7 hours of sunshine per day
- 18 days with some rainfall
18 - 23°C min night temperature
23 - 12 hours of daylight per day
12 - High heat & humidity
H - 171 mm of monthly rainfall
171 - 10 (Very High) UV index
10 - 29°C sea temperature
29
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The October weather guide for Puerto Rico (San Juan) shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.
Metric (°C / mm) | Imperial (°F / inches)
More about Puerto Rico
How hot is it in San Juan in October?
Daytime temperatures usually reach 30°C in San Juan in October with high heat and humidity, falling to 23°C at night.
How sunny is it in San Juan in October?
There are normally 7 hours of bright sunshine each day in San Juan in October - that's 62% of daylight hours.
How warm is the sea around San Juan in October?
The average sea temperature around San Juan in October is 29°C.
Does it rain in San Juan in October?
There are usually 18 days with some rain in San Juan in October and the average monthly rainfall is 171mm.
What is the chance of a hurricane in San Juan in October?
On average less than 1 day in October in San Juan is likely to be affected by the passage of one or more tropical storms.
San Juan October sunrise & sunset times
Browse the sunrise and sunset times for San Juan in October 2025. Select a month to view San Juan sunrise and sunset times for the next 12 months.
JanFebMarAprMayJunJulAugSepOctNovDec
| Date | Sunrise times | Sunset times |
|---|---|---|
| Wednesday, 1st October 2025 | 06:15 | 18:13 |
| Thursday, 16th October 2025 | 06:19 | 18:01 |
| Friday, 31st October 2025 | 06:24 | 17:52 |
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