Agana weather in October 2025

Expect 31°C daytime maximum temperatures in the shade with on average 4 hours of sunshine per day in Agana in October based on long-term weather averages. There is usually 22 days with some rainfall and 317 mm of average monthly rainfall in October.

  • 31°C maximum daytime temperature in October in Agana31
    31°C max day temperature
  • 4 hours of sunshine per day
  • 22 days with some rainfall in October in Agana22
    22 days with some rainfall
  • 25°C minimum night-time temperature in October in Agana25
    25°C min night temperature
  • 12 hours of daylight per day in October in Agana12
    12 hours of daylight per day
  • Very high heat & humidity in October in AganaVH
    Very High heat & humidity
  • 317 mm monthly rainfall in October in Agana317
    317 mm of monthly rainfall
  • UV (maximum) index 11+ (Extreme) in October in Agana11
    11+ (Extreme) UV index
  • 29°C sea temperature in October in Agana29
    29°C sea temperature

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The October weather guide for Guam, represented by Agana, (Agana) 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)

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How hot is it in Agana in October?

Daytime temperatures usually reach 31°C in Agana in October with very high heat and humidity, falling to 25°C at night.

How sunny is it in Agana in October?

There are normally 4 hours of bright sunshine each day in Agana in October - that's 37% of daylight hours.

How warm is the sea around Agana in October?

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

Does it rain in Agana in October?

There are usually 22 days with some rain in Agana in October and the average monthly rainfall is 317mm.

What is the chance of a typhoon in Agana in October?

On average 2.5 days in October in Agana are likely to be affected by the passage of one or more tropical storms.

Agana October sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Wednesday, 1st October 2025 06:10 18:11
Thursday, 16th October 2025 06:12 18:01
Friday, 31st October 2025 06:15 17:54

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