San Juan weather in January 2023

  • 27°C maximum daytime temperature in January in San Juan27
    27°C max day temperature
  • 8 hours of sunshine per day
  • 20 days with some rainfall in January in San Juan20
    20 days with some rainfall
  • 20°C minimum night-time temperature in January in San Juan20
    20°C min night temperature
  • 11 hours of daylight per day in January in San Juan11
    11 hours of daylight per day
  • Moderate heat & humidity in January in San JuanM
    Moderate heat & humidity
  • 116 mm monthly rainfall in January in San Juan116
    116 mm of monthly rainfall
  • UV (maximum) index 8 (Very High) in January in San Juan8
    8 (Very High) UV index
  • 26°C sea temperature in January in San Juan26
    26°C sea temperature
  • Explore top offers on direct flights from the UK
  • Filter destinations by price, trip type, flight time & more
  • Choose a destination to see cheapest fares & airlines

Recommended for Puerto Rico

The January 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.

  • Top deals & discounts
  • San Juan weather overview
  • San Juan climate averages by month
  • More destinations
  • Best time to go to San Juan
  • San Juan 5-day weather forecast

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

Metric (°C / mm)  |  Imperial (°F / inches)

Back to top

More about Puerto Rico

How hot is it in San Juan in January?

Daytime temperatures usually reach 27°C in San Juan in January with moderate heat and humidity, falling to 20°C at night.

How sunny is it in San Juan in January?

There are normally 8 hours of bright sunshine each day in San Juan in January - that's 69% of daylight hours.

How warm is the sea around San Juan in January?

The average sea temperature around San Juan in January is 26°C.

Does it rain in San Juan in January?

There are usually 20 days with some rain in San Juan in January and the average monthly rainfall is 116mm.

San Juan January sunrise & sunset times

Browse the sunrise and sunset times for San Juan in January 2023. Select a month to view San Juan sunrise and sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Sunday, 1st January 2023 06:57 17:59
Monday, 16th January 2023 07:00 18:09
Tuesday, 31st January 2023 06:58 18:18

Related posts

Popular travel offers

Top ^

*affiliate links: find out how we are funded and why this helps us remain free to use.