St. John's, Newfoundland (St. John's) weather in July
July in St. John's, Newfoundland: nice, rainy, with clean air — one of the best months to visit.
Updated September 2026 · climate normals from ERA5 reanalysis
#1 of 12 months in St. John's, Newfoundland · #257 of 1413 destinations to visit in July · comfort 90/100 (tier S)
- Days
- 23°C
- Nights
- 12°C
- Wet days
- 10
- Sun
- 8.9 h
- Humidity
- 84%
- Daylight
- 16 h

Traveller notes on St. John's, Newfoundland in July
Late July is the best chance of good weather here, and the St John's forum still refuses to promise any: the standing line is that if you do not like it, wait, and posters say it is not unusual to get sun, rain, hail, sleet and snow in one day. Fog is the local specialty - the city averages 124 fog days a year, June's blanket capelin fogs being the worst of it, and they thin out after mid-July. That timing cuts the other way for icebergs: the season is May to June, so arriving mid-July makes sightings slim. Packing advice is shorts and short sleeves plus, always with you, long trousers, a fleece, a rain shell, a warm hat and gloves. The record: 22.8C days, 11.9C nights, 10 precipitation days, 84 percent humidity, an 11.4C sea.
Other months in St. John's, Newfoundland
Regulars are direct that this is the rainiest month of the year here, occasionally worsened by the remnants of a hurricane or tropical storm pushing in extra rain, and specifically recommend the first ten days as the sweet spot before it turns cooler and the odds of snow climb. Our row backs that cool, genuinely wet read, 13.1C over 4.1C nights feeling 0C, with 84.2mm of rain across 9.8 days and a trace of early snow, 0.1cm. Regulars are consistent the city itself stays fully in swing for visitors even as some seasonal attractions wind down, Signal Hill's visitor center specifically closing around the 10th of the month. The sea sits at a cold 9.4C. The record: humidity 80 percent, 5.6 hours of sun, a 26.1 kph wind and AQI 34.
May here is rain, wind and fog, and regulars say the variation is the real story: one day near freezing, the next 15C. Our row averages 11.7C but reads as 8C, with nights at 1.4C feeling like -3C in a 25 kph wind, 73.7mm across 11.6 days, and 2.1cm still sitting in the snow column. A hooded coat, because the rain and sleet here travel sideways, and a sweater underneath it. Icebergs are why many people come and nobody on the board will promise them: they drift on currents and pack ice, they turn up any time from March into July, and mid to late May is a good bet rather than a safe one. Dress for the boat - the sea is 1.5C. The record: humidity 80 percent, 8.6 hours of sun and AQI 35.
September is one of the better months for weather here and the worst trade you can make for wildlife. The fog thins - this city averages 124 fog days a year, but they are far fewer after mid-July - and the coast clears. The icebergs, though, run March to about July, so late September offers little or no chance of one, and the puffins and whales are thinning too, with the humpbacks starting their move to calving grounds. Our row gives 18.3C days over 8.7C nights that feel like 6C, a 25.3 kph wind and a 12.9C sea. The record: 90.9mm across 10.2 days, 7.3 hours of sun and AQI 36.
June in St John's has a local name for its fog - capelin weather - blanket fog that can sit for days, and regulars are honest that it is the month's one real drawback in a month that is not warm to begin with. Our row gives 17.9C by day feeling like 16C, 7.1C at night, and a 4.5C sea. After mid-July it is less common. The trade they offer in exchange is the reason to come at all: the same capelin run brings the whales, and June is prime iceberg season, though the bergs that reach St John's, Bay Bulls and Ferryland have melted small by the time they get this far south. Mid-June averages nearer 18C by day and 12 at night. The record: 11.2 precipitation days carrying 81.4mm, humidity 84 percent and a 23.8 kph wind.
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St. John's, Newfoundland climate normals — July
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
Crowds in St. John's, Newfoundland in July
How busy the place itself is — school and mass holidays, the months an editor tagged, and how sought-after the weather makes them. Never part of the comfort score.
Peak crowdsMemorial Day and Canada Day, George Street Festival, Summer break in Canada(estimated)
Peak crowdsBusyShoulder seasonQuiet
Best months for St. John's, Newfoundland's weather
Ranked by this destination's own climate comfort score across the year — a different thing from how busy it gets (see Crowds above).
Best weatherSt. John's, Newfoundland's weather peaks June–August, best around July.
July includes Iceberg season.
Best weatherFair weatherToughest weather
What's on in St. John's, Newfoundland in July
Recurring seasonal events, natural spectacles, closures and holidays — curated and sourced.
- Nature
Iceberg season
1 May – 10 Jul · usuallyBergs calved off Greenland drift down the coast and ground in the shallows, usually most numerous from late May to mid-June. Some years bring dozens past Cape Spear and some bring almost none. Source ↗
- Nature
Puffins at Witless Bay
15 May – 15 Aug · usuallyBirdlife seasonHundreds of thousands of puffins and murres nest on the islands half an hour south of town, reachable on a two-hour boat that usually finds whales on the same trip.
- Season
Fog season
15 May – 31 Jul · usuallyRiskWarm air over the cold Labrador current makes this one of the foggiest places anywhere, worst in late spring and early summer. Signal Hill vanishes for days and the icebergs are somewhere in it.
- Nature
Humpbacks and the capelin roll
1 Jun – 31 Aug · usuallyWhale seasonHumpbacks follow the capelin inshore in June and stay through the summer. The capelin themselves spawn onto the beaches in a few days somewhere around the turn of July, and people fill buckets.
- Holiday
Memorial Day and Canada Day
1 JulNational holidayClosuresIn this province 1 July is Memorial Day before it is Canada Day. The morning ceremony at the National War Memorial marks the regiment cut down at Beaumont-Hamel in 1916; the celebrating starts afterwards. Source ↗
- Festival
George Street Festival
29 Jul – 5 Aug · usuallyMusic festivalCrowdedA week of outdoor concerts on a two-block street that is nothing but bars, ending the night before the Regatta. The two are planned as one long week here. Source ↗
Where is St. John's, Newfoundland?
St. John's, Newfoundland in July — FAQ
- Is July a good time to visit St. John's, Newfoundland?
- July in St. John's, Newfoundland: nice, rainy, with clean air — one of the best months to visit. It ranks #1 of 12 months for St. John's, Newfoundland on SeasonMap's comfort score (90/100).
- What is the weather like in St. John's, Newfoundland in July?
- In July, St. John's, Newfoundland averages a daily high of 22.8°C and a low of 11.9°C, with about 82.4 mm of rain over roughly 10 rainy days.
- What is the air quality in St. John's, Newfoundland in July?
- St. John's, Newfoundland has a mean US Air Quality Index of about 33 in July.