St John weather in July 2025

Expect 21°C daytime maximum temperatures in the shade with on average 7 hours of sunshine per day in St John in July. Check more long-term weather averages for St John in July before you book your next holiday to New Brunswick in 2025/2026.

  • 21°C maximum daytime temperature in July in St John21
    21°C max day temperature
  • 7 hours of sunshine per day
  • 12 days with some rainfall in July in St John12
    12 days with some rainfall
  • 12°C minimum night-time temperature in July in St John12
    12°C min night temperature
  • 15 hours of daylight per day in July in St John15
    15 hours of daylight per day
  • No heat & humidity in July in St John0
    No heat & humidity
  • 100 mm monthly rainfall in July in St John100
    100 mm of monthly rainfall
  • UV (maximum) index 7 (High) in July in St John7
    7 (High) UV index
  • 12°C sea temperature in July in St John12
    12°C sea temperature

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The July weather guide for New Brunswick (St John) 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 St John in July?

Daytime temperatures usually reach 21°C in St John in July, falling to 12°C at night.

How sunny is it in St John in July?

There are normally 7 hours of bright sunshine each day in St John in July - that's 47% of daylight hours.

How warm is the sea around St John in July?

The average sea temperature around St John in July is 12°C.

Does it rain in St John in July?

There are usually 12 days with some rain in St John in July and the average monthly rainfall is 100mm.

St John July sunrise & sunset times

Browse the sunrise and sunset times for St John in July 2025. Select a month to view St John sunrise and sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Tuesday, 1st July 2025 04:41 20:16
Wednesday, 16th July 2025 04:52 20:08
Thursday, 31st July 2025 05:08 19:53

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