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Saint John Weather in May
May in Saint John brings high temperatures, with daytime highs of 28°C (82°F) and nights around 26°C (79°F). Quite a bit of rainfall is expected, around 87 mm (3.4 in), so pack an umbrella.
Rainfall in Saint John in May
Historically, the month has about 16 days of rain, averaging 87 mm (3.4 in) in total. Neither particularly heavy nor particularly frequent, the rain this month is about average. A light jacket should be enough on most wet days.
Temperature in Saint John in May
May tends to be one of the excellent months in Saint John, with 28°C (82°F) in the afternoon and 26°C (79°F) overnight. The days can feel warmer than the evenings, so packing for both parts of the day is a good idea. With lows around 26°C (79°F), the nights are warm enough that a sheet is usually all you need for bedding.If your ideal day consists of dry skies and pleasant temperatures, January, February, March, April, May, June, July and December typically offer the best circumstances for Saint John.
Saint John Temperature in May
Min Temperature
26°C (79°F)
Max Temperature
28°C (82°F)
Chance of Rain
53%
Precipitation
87 mm (3.4 in)
Rainy days
16 days
Saint John Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Saint John - and find the best time to visit.
Daily Historical Temperatures
48-year average (1976-2025)
Based on our historical records, temperatures in Saint John typically stay consistent throughout May, with daily highs averaging around 28°C (82°F). Nights are warm, with lows around 25°C (77°F).
Average temperatures in May
Daily Historical Precipitation
48-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in May
Historical weather records for Saint John in May
Browse day-by-day weather records for Saint John spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Saint John historical weather extremes in May
The extremes listed below come from historical weather data collected in Saint John from 2005 through 2026.
- The hottest May day on record in Saint John reached 35°C (95°F) (May 5, 2024).
- Saint John experienced its chilliest May day on May 10, 2014, reaching only 26°C (79°F).
- Nighttime temperatures dropped to 22°C (72°F) on May 23, 2018, marking the coldest May night on record.
Best Places in US Virgin Islands in May
Find out more about the weather in US Virgin Islands and which places have the best travel conditions in this month. See all of US Virgin Islands in May →
perfect weather
pleasant
tolerable
unpleasant
poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).
What to Wear in Saint John in May
Warm temperatures in May make for comfortable sightseeing weather. Pack breathable fabrics like cotton shirts, knee-length shorts or skirts, and comfortable walking shoes. A thin long sleeve for indoor spaces is handy. Prepare for significant rainfall with proper waterproof clothing and shoes.
What To Do in Saint John in May
We rated the following activities from 1 (least suitable) to 10 (best) to do.
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Cycling7/10 -
Walking7/10 -
Camping7/10 -
Outdoor sports7/10
Saint John 3-Day Forecast
More climate data for Saint John
See the full Saint John climate overview or explore weather in US Virgin Islands.
Popular in May
Where to go in May - average daytime high across popular destinations.
Lindbergh Bay
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