Arroyo weather in August 2025

Expect 88°F daytime maximum temperatures in the shade with on average 9 hours of sunshine per day in Arroyo in August. Check more long-term weather averages for Arroyo in August before you book your next holiday to Puerto Rico in 2025/2026.

  • 88°F maximum daytime temperature in August in Arroyo88
    88°F max day temperature
  • 9 hours of sunshine per day
  • 19 days with some rainfall in August in Arroyo19
    19 days with some rainfall
  • 75°F minimum night-time temperature in August in Arroyo75
    75°F min night temperature
  • 13 hours of daylight per day in August in Arroyo13
    13 hours of daylight per day
  • Very high heat & humidity in August in ArroyoVH
    Very High heat & humidity
  • 5.3 inches monthly rainfall in August in Arroyo5.3
    5.3 inches of monthly rainfall
  • UV (maximum) index 11+ (Extreme) in August in Arroyo11
    11+ (Extreme) UV index
  • 84°F sea temperature in August in Arroyo84
    84°F sea temperature

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The August weather guide for Puerto Rico (Arroyo) 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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More about Puerto Rico

How hot is it in Arroyo in August?

Daytime temperatures usually reach 88°F in Arroyo in August with very high heat and humidity, falling to 75°F at night.

How sunny is it in Arroyo in August?

There are normally 9 hours of bright sunshine each day in Arroyo in August - that's 68% of daylight hours.

How warm is the sea around Arroyo in August?

The average sea temperature around Arroyo in August is 84°F.

Does it rain in Arroyo in August?

There are usually 19 days with some rain in Arroyo in August and the average monthly rainfall is 5.3 inches.

What is the chance of a hurricane in Arroyo in August?

On average less than 1 day in August in Arroyo is likely to be affected by the passage of one or more tropical storms.

Arroyo August sunrise & sunset times

Browse the sunrise and sunset times for Arroyo in August 2025. Select a month to view Arroyo sunrise and sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Friday, 1st August 2025 06:03 18:58
Saturday, 16th August 2025 06:07 18:50
Sunday, 31st August 2025 06:10 18:39

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