Best year time to visit Saint John Harbor

General weather information about Saint John Harbor

Average annual temperature is 7.6 °C

Absolute maximum temperature: 27.6 °C

Absolute minimum temperature: -10.3 °C

Number of sunny days: 90 days

Number of rainy days: 263 days

Number of snow days: 12 days

Look at detailed online map of Saint John Harbor

* Weather data for Saint John Harbor United States is based on climate observations for 2026 year

Saint John Harbor air temperature forecast for each month

JanFebMarAprMayJunJulAugSepOctNovDec
Absolute maximum temperature (°C)7.86.110.316.526.922.927.624.423.116.59.88.9
Average daytime temperature (°C)5.02.74.28.414.515.720.518.914.410.47.15.1
Average temperature (°C)3.50.90.94.910.012.115.614.911.47.95.23.5
Average night temperature (°C)2.3-0.7-1.22.86.79.212.212.29.66.23.72.0
Absolute minimum temperature (°C)-1.7-10.3-9.3-0.50.85.69.58.94.7-1.50.1-1.1

Saint John Harbor monthly weather indicators

JanFebMarAprMayJunJulAugSepOctNovDec
Daylight maximum duration (h)8.010.013.015.017.017.017.016.013.011.09.07.0
Daylight mean duration (h)7.69.611.914.216.417.617.015.112.810.48.27.0
Daylight minimum duration (h)6.08.010.013.015.017.016.013.011.09.07.06.0
Sunshine mean duration (h)1.52.76.65.97.97.811.48.14.13.31.70.9
Precipitation (mm)2792309420010513579146344229395379
Sunny days53122141117123920
Rainy days251916281719141927222829
Snow days163000000002

Saint John Harbor - weather forecast by months

Saint John Harbor weather in januarySaint John Harbor weather in februarySaint John Harbor weather in marchSaint John Harbor weather in aprilSaint John Harbor weather in maySaint John Harbor weather in juneSaint John Harbor weather in julySaint John Harbor weather in augustSaint John Harbor weather in septemberSaint John Harbor weather in octoberSaint John Harbor weather in novemberSaint John Harbor weather in december

Best time to visit Saint John Harbor:

The best time to visit Saint John Harbor during the most sunny months:

  • March — 6.6(h)
  • May — 7.9(h)
  • June — 7.8(h)
  • July — 11.4(h)
  • August — 8.1(h)

Months with the longest average daylight duration in Saint John Harbor:

  • May — 16.4(h)
  • June — 17.6(h)
  • July — 17.0(h)

The largest precipitation sum in Saint John Harbor is at

  • January — 279(mm)
  • September — 344(mm)
  • November — 395(mm)
  • December — 379(mm)

    • Weather forecast in the closest to Saint John Harbor admin centers

    Weather forecast in the closest towns to Saint John Harbor

    Explore Saint John Harbor

    See also
    MapTrains schedule
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    Frequently asked questions

    When is the best time to visit Saint John Harbor?
    The historical weather data above shows the warmest, sunniest and driest months to help you choose the best time to visit Saint John Harbor.
    What is the weather like in Saint John Harbor?
    See average temperature, rainfall and daylight hours for Saint John Harbor by month in the table above.
    How many sunny days does Saint John Harbor have?
    The monthly weather statistics above show sunshine and rainfall patterns for Saint John Harbor throughout the year.