Weather in St. John's in July

Shoulder season. July is shoulder season in St. John's — cheaper, quieter, and a genuine gamble. You should expect rain on 16 days of the month, which is more days wet than dry.

July ranks 2 of 12 in St. John's. Only August scores clearly higher, and the difference is small enough to be settled by price rather than weather.

This is persistent light rain rather than storms: 16 wet days but only 2 heavy ones. It rarely cancels anything outright, and it rarely fully clears either. A jacket beats an umbrella. Pack for 15.7 °C days and 11.6 °C nights; the spread matters more here than any single number.

What the averages hide

Averages flatten a month, and this one hides a few things: the day barely swings — 4 °C between the overnight low and the afternoon high. Across the twenty years measured, the hottest July day reached 22.5 °C and the coldest night fell to 4.3 °C, and the wettest single day dropped 28 mm — roughly 30% of the month's rain in one day.

July is statistically steady but not small: the year-to-year variation is modest in relative terms, yet the wettest July on record still delivered 150 mm against 54 mm in the driest. In a month this wet, even a tame spread is a lot of rain in absolute terms — the 93 mm average is a reasonable planning figure, not a promise.

Wind is light at 13.1 km/h, so the temperature on the page is close to the temperature on your skin, and humidity runs at 90%, high enough to notice on the warm days without dominating them.

How July sits in the year

The month is on the way up: 5.7 °C warmer than June, and August adds another 1.7 °C. Late in the month feels noticeably different from the start of it, which is worth knowing if the trip is short.

Daylight in July

July is at or near the longest days of St. John's's year: 15.6 hours of daylight, losing 0.9 hours across the month. Evenings are the real gain — dinner outdoors still happens in full light.

Sea temperature

The sea sits at about 10.7 °C in July — too cold to swim without a wetsuit. This is the warmest the water gets all year.

How busy it gets

Peak season. Expect the highest prices of the year and to be booking well ahead.

Crowd levels are estimated from climate desirability and school-holiday calendars, not from visitor numbers.

July in St. John's versus nearby

If St. John's is one option among several, the nearby comparison is worth making. Sydney is a better bet in July — 5.4 °C warmer, 3 days less rain. Halifax is a better bet in July — 4.6 °C warmer, 5 days less rain.

So: July works, with August the better month by 7 points if the dates can move. If they cannot, nothing here should stop you booking.

Every month in St. John's

See all twelve months in St. John's, or where else to go in July.