San Juan weather in October 2025

Q: 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.

Q: 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.

Q: How warm is the sea around San Juan in October?

The average sea temperature around San Juan in October is 29°C.

Q: 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.

Q: What is the chance of a cyclone 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.

Expect daytime maximum temperatures of 86°F 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 6.7 inches of rainfall in the month.

86
86°F max day temperature
7
7 hours of sunshine per day
18
18 days with some rainfall
73
73°F min night temperature
12
12 hours of daylight per day
H
High heat & humidity
6.7
6.7 inches of monthly rainfall
10
10 (Very High) UV index
84
84°F sea temperature

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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) | Imperial (°F)

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How hot is it in San Juan in October?

Daytime temperatures usually reach 86°F in San Juan in October with high heat and humidity, falling to 73°F 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 84°F.

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 6.7 inches.

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.

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

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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Puerto Rico - quick facts
Flight time^✝	12 to 13 hours
Time difference	UK -4 hours
Language(s)	Spanish, English
Currency	United States Dollar
Electricity	A + B plug (120V)
Driving side	Right
Visa^✝	Yes
Why visit?	Beaches Nature Nightlife
Tourist info	Discover Puerto Rico