The best times to visit St Johns for ideal weather are
June 25th to September 23rd
based on average temperature and humidity from NOAA (the National Oceanic and Atmospheric Administration). Read below for more weather and travel details.
St Johns Travel Guide
Other St Johns Travel Info
Weather in St Johns
Temperature
Average temperatures in St Johns vary drastically. Considering humidity, temperatures feel cold for most of the year with a chance of rain or snow throughout most of the year. The area is less temperate than some — in the 17th percentile for pleasant weather — compared to tourist destinations worldwide. Weeks with ideal weather are listed above. If you’re looking for the very warmest time to visit St Johns, the hottest months are August, July, and then September. See average monthly temperatures below. The warmest time of year is generally mid August where highs are regularly around 74.1°F (23.4°C) with temperatures rarely dropping below 55.2°F (12.9°C) at night.
St Johns Temperatures (Fahrenheit)
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St Johns Temperatures (Celsius)
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“Feels-Like” Temperatures
The way we experience weather isn’t all about temperature. Higher temperatures affect us much more at higher humidity, and colder temperatures feel piercing with high winds. Our perceived temperatures factor in humidity and wind chill to better represent how hot or cold the day feels to a person.
St Johns Perceived Temperature (F)
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St Johns Perceived Temperature (C)
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Average St Johns Temperatures by Month
Daily highs (averaged for the month) usually give the best indication of the weather. A significantly lower mean and low generally just means it gets colder at night.
Show Fahrenheit
| Month | Avg. High (°F) | Avg. Mean (°F) | Avg. Low (°F) |
|---|---|---|---|
| Jan | 34.9 | 27.2 | 19.9 |
| Feb | 31.8 | 24.9 | 18.6 |
| Mar | 35.1 | 27.2 | 19.8 |
| Apr | 45.4 | 36 | 28.2 |
| May | 55.4 | 44.6 | 36.3 |
| Jun | 60.3 | 50 | 41.8 |
| Jul | 72.3 | 61.6 | 52.6 |
| Aug | 71.4 | 62.2 | 54.6 |
| Sep | 66.3 | 56.7 | 47.7 |
| Oct | 56.1 | 47.7 | 40 |
| Nov | 45.4 | 38.6 | 32 |
| Dec | 37.7 | 31.4 | 25.6 |
Show Celsius
| Month | Avg. High (°C) | Avg. Mean (°C) | Avg. Low (°C) |
|---|---|---|---|
| Jan | 1.6 | -2.7 | -6.7 |
| Feb | -0.1 | -3.9 | -7.4 |
| Mar | 1.7 | -2.7 | -6.8 |
| Apr | 7.4 | 2.2 | -2.1 |
| May | 13 | 7 | 2.4 |
| Jun | 15.7 | 10 | 5.4 |
| Jul | 22.4 | 16.4 | 11.4 |
| Aug | 21.9 | 16.8 | 12.6 |
| Sep | 19.1 | 13.7 | 8.7 |
| Oct | 13.4 | 8.7 | 4.4 |
| Nov | 7.4 | 3.7 | 0 |
| Dec | 3.2 | -0.3 | -3.6 |
Precipitation (Rain or Snow)
If dry weather is what you’re after, the months with the lowest chance of significant precipitation in St Johns are August, September, and then May. Note that we define “significant precipitation” as .1 inches or more in this section. The lowest chance of rain or snow occurs around early March. For example, on the week of March 5th there are no days of precipitation on average. By contrast, it’s most likely to rain or snow in mid December with an average of 3 days of significant precipitation the week of December 17th.
When can you find snow in St Johns? Weather stations report very large amounts of snow likely to be deepest around March, especially close to early March. The best time to ski (if at all) in St Johns is often around around February 26th when fresh powder is deepest. Please note that a value of 0 for snow in the graph below may either mean there was no snow, or that snow is unreported.
Chance of Precipitation
The graph below shows the % chance of rainy and snowy days in St Johns.
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Snow on the Ground
The graph below shows the average snow on the ground in St Johns (in).
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Average Rain and Snow by Month
Show Inches
| Month | Daily Chance of Rain | Average Snow Depth (in) | Total Precipitation (in) |
|---|---|---|---|
| Jan | 37% | 10.3 | 5.5 |
| Feb | 32% | 11.5 | 4.5 |
| Mar | 26% | 14.2 | 2.8 |
| Apr | 25% | 10.3 | 3.8 |
| May | 21% | 0 | 3.4 |
| Jun | 21% | 0 | 2.9 |
| Jul | 23% | 0 | 2.9 |
| Aug | 20% | 0 | 3.5 |
| Sep | 21% | 0 | 4.5 |
| Oct | 34% | 0 | 5.4 |
| Nov | 30% | 0 | 4.2 |
| Dec | 34% | 8.1 | 5.2 |
Show Centimeters
| Month | Daily Chance of Rain | Average Snow Depth (cm) | Total Precipitation (cm) |
|---|---|---|---|
| Jan | 37 | 26.2 | 14 |
| Feb | 32 | 29.2 | 11.4 |
| Mar | 26 | 36.1 | 7.1 |
| Apr | 25 | 26.2 | 9.7 |
| May | 21 | 0 | 8.6 |
| Jun | 21 | 0 | 7.4 |
| Jul | 23 | 0 | 7.4 |
| Aug | 20 | 0 | 8.9 |
| Sep | 21 | 0 | 11.4 |
| Oct | 34 | 0 | 13.7 |
| Nov | 30 | 0 | 10.7 |
| Dec | 34 | 20.6 | 13.2 |
Humidity and Wind
St Johns has some very humid months, and high humidity throughout the year. The least humid month is March (71.8% relative humidity), and the most humid month is October (77.7%).
Wind in St Johns is usually moderate. The windiest month is February, followed by March and January. February’s average wind speed of around 10.1 knots (11.6 MPH or 18.7 KPH) is considered “a gentle breeze.” Maximum sustained winds (the highest speed for the day lasting more than a few moments) are at their highest in early to mid February where average top sustained speeds reach 17.4 knots, which is considered a fresh breeze.
Relative Humidity (%)
The graph below shows the average % humidity by month in St Johns.
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Wind
The graph below shows wind speed (max and average) in knots.
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Average Wind Speeds
Show Wind Speeds
All wind speeds are in knots. 1 knot = 1.15 MPH or 1.85 KPH.
| Month | Avg. Wind | Avg. Wind Feel | Sustained High Wind | High Wind Feel |
| Jan | 9.4 | Gentle breeze | 14.3 | Significant breeze |
| Feb | 10.1 | Gentle breeze | 15.2 | Significant breeze |
| Mar | 9.4 | Gentle breeze | 13.7 | Significant breeze |
| Apr | 8.9 | Gentle breeze | 12.9 | Significant breeze |
| May | 7.6 | Gentle breeze | 11.7 | Significant breeze |
| Jun | 6.9 | Light breeze | 10.8 | Gentle breeze |
| Jul | 7.6 | Gentle breeze | 11.1 | Significant breeze |
| Aug | 7.1 | Gentle breeze | 10.7 | Gentle breeze |
| Sep | 7.6 | Gentle breeze | 12 | Significant breeze |
| Oct | 7.9 | Gentle breeze | 12.3 | Significant breeze |
| Nov | 8.8 | Gentle breeze | 13.2 | Significant breeze |
| Dec | 9 | Gentle breeze | 13.3 | Significant breeze |
Show Relative Humidity by Month
| Month | Avg. Relative Humidity |
|---|---|
| Jan | 77% |
| Feb | 75.3% |
| Mar | 71.8% |
| Apr | 72.2% |
| May | 74.9% |
| Jun | 77.2% |
| Jul | 73% |
| Aug | 77.2% |
| Sep | 76% |
| Oct | 77.7% |
| Nov | 75.7% |
| Dec | 76.8% |
Is it Safe to Travel to St Johns?
#N/A
The Busiest and Least Crowded Months
The busiest month for tourism in St Johns, NL, Canada is July, followed by August and June. Prices for hotels and flights will be most expensive during these months, though you can save if you purchase well in advance. Tourists are unlikely to visit St Johns in December. Those willing to visit at these times will likely find it the least expensive month.
Estimated Tourism by Month
Most Popular Months to Visit
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Overall St Johns Travel Experience by Season
Spring (March through May)
Humidity and temperatures combine to make this season feel moderately cold. Highs range from 62°F (16.7°C) and 30.1°F (-1.1°C) with warmer temperatures in the later months. Rain is somewhat common with 6 to 8 days of significant precipitation per month. Spring is the second busiest for tourism, which makes it a good time for those looking for things to do.
Summer (June through August)
The middle-year months have comfortably cool weather with high temperatures that are comfortable. These months see the least precipitation with 6 to 7 days of precipitation per month. June – August is the busiest season for tourism in St Johns, so lodging and other accommodations may cost more than usual.
Fall (September through November)
Fall daily highs range from 69.4°F (20.8°C) and 41.8°F (5.4°C), which will feel chilly given the humidity and wind. It rains or snows a significant amount: 6 to 10 days per month. Tourism is fairly slow during these months due to the weather, so hotels may be lower priced.
Winter (December through February)
Weather is far too cold this time of year in St Johns to be enjoyable for warm weather travelers. The average high during this season is between 41.7°F (5.4°C) and 28.7°F (-1.8°C). On average, it rains or snows a great amount: 9 to 12 times per month. These times of year are the slowest with tourists.
Best Times to Travel› Canada › St Johns, NL, Canada