Porto Velho weather in December 2025

Expect daytime maximum temperatures of 31°C in Porto Velho, Brazil in December and very high heat and humidity based on long-term weather averages. There are 4 hours of sunshine per day on average with 22 days with some rainfall and typically 315 mm of rainfall in the month.

  • 31°C maximum daytime temperature in December in Porto Velho31
    31°C max day temperature
  • 4 hours of sunshine per day
  • 22 days with some rainfall in December in Porto Velho22
    22 days with some rainfall
  • 22°C minimum night-time temperature in December in Porto Velho22
    22°C min night temperature
  • 13 hours of daylight per day in December in Porto Velho13
    13 hours of daylight per day
  • Very high heat & humidity in December in Porto VelhoVH
    Very High heat & humidity
  • 315 mm monthly rainfall in December in Porto Velho315
    315 mm of monthly rainfall
  • UV (maximum) index 11+ (Extreme) in December in Porto Velho11
    11+ (Extreme) UV index

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Porto Velho by month

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The December weather guide for Brazil (Porto Velho) 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 Porto Velho in December?

Daytime temperatures usually reach 31°C in Porto Velho in December with very high heat and humidity, falling to 22°C at night.

How sunny is it in Porto Velho in December?

There are normally 4 hours of bright sunshine each day in Porto Velho in December - that's 32% of daylight hours.

Does it rain in Porto Velho in December?

There are usually 22 days with some rain in Porto Velho in December and the average monthly rainfall is 315mm.

Porto Velho December sunrise & sunset times

Browse the sunrise and sunset times for Porto Velho in December 2025. Select a month to view Porto Velho sunrise and sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st December 2025 05:47 18:23
Tuesday, 16th December 2025 05:52 18:30
Wednesday, 31st December 2025 06:00 18:38

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