St. John's
May
Weather in St. John's for May 2025
Your guide to St. John's weather in May - trends and predictions
In general, the average temperature in St. John's at the beginning of May is 4.3 °C. As the month progressed, temperatures tended to significantly warm up, reaching an average of 9.4 °C by the end of May.
St. John's sees moderate rainfall in May, averaging 9 rainy days.
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22
Dry days
9
Rainy days
0
Snow days
8°/2°
Temperatures
26 km/h
Avg max wind
86 %
Avg humidity
St. John's in May average weather
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| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  4° | 2 4° | 3 3° | 4  3° | |||
| 5  3° | 6  6° | 7 7° | 8 6° | 9 6° | 10  6° | 11 6° |
| 12 7° | 13 9° | 14 6° | 15 8° | 16 10° | 17 8° | 18 7° |
| 19  9° | 20 9° | 21 12° | 22 10° | 23 4° | 24  7° | 25 10° |
| 26 8° | 27 6° | 28 12° | 29 8° | 30 12° | 31 10° |
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Temperatures trend during May in St. John's
See the weather trend as well as the moving average line
May weather day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 May | Overcast | 4° /1° | 0.5 mm | 1 | |
| 2 May | Overcast | 4° /1° | 0.5 mm | 2 | |
| 3 May | Overcast | 3° /1° | 1.4 mm | 1 | |
| 4 May | Patchy rain possible | 3° /1° | 0.9 mm | 1 | |
| 5 May | Moderate or heavy rain shower | 3° /1° | 7.9 mm | 2 | |
| 6 May | Heavy rain at times | 6° /0° | 1.5 mm | 2 | |
| 7 May | Overcast | 7° /2° | 0.9 mm | 2 | |
| 8 May | Heavy rain at times | 6° /2° | 2.2 mm | 2 | |
| 9 May | Patchy rain possible | 6° /2° | 4.3 mm | 2 | |
| 10 May | Partly cloudy | 6° /1° | 0 mm | 2 | |
| 11 May | Partly cloudy | 6° /1° | 0 mm | 2 | |
| 12 May | Partly cloudy | 7° /1° | 7.8 mm | 3 | |
| 13 May | Partly cloudy | 9° /2° | 0 mm | 3 | |
| 14 May | Moderate or heavy rain shower | 6° /2° | 11 mm | 2 | |
| 15 May | Overcast | 8° /3° | 1 mm | 3 | |
| 16 May | Patchy rain possible | 10° /4° | 1.1 mm | 3 | |
| 17 May | Patchy rain possible | 8° /3° | 3.4 mm | 3 | |
| 18 May | Patchy rain possible | 7° /2° | 7.2 mm | 3 | |
| 19 May | Sunny | 9° /2° | 0 mm | 3 | |
| 20 May | Partly cloudy | 9° /3° | 0 mm | 4 | |
| 21 May | Overcast | 12° /5° | 0 mm | 3 | |
| 22 May | Moderate or heavy rain shower | 10° /2° | 11.5 mm | 3 | |
| 23 May | Moderate or heavy rain shower | 4° /1° | 11.1 mm | 2 | |
| 24 May | Cloudy | 7° /1° | 14.6 mm | 2 | |
| 25 May | Overcast | 10° /4° | 2.9 mm | 3 | |
| 26 May | Moderate or heavy rain shower | 8° /3° | 13 mm | 2 | |
| 27 May | Overcast | 6° /3° | 0 mm | 2 | |
| 28 May | Patchy rain possible | 12° /3° | 0.4 mm | 4 | |
| 29 May | Patchy rain possible | 8° /3° | 1.3 mm | 2 | |
| 30 May | Overcast | 12° /4° | 0.2 mm | 3 | |
| 31 May | Overcast | 10° /5° | 1.3 mm | 3 | |
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Important Notice
Our weather forecast for St. John's in May is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the St. John's forecast closer to your planned date for the most up-to-date weather information.
St. John's in May - FAQ
What are the expected maximum and minimum temperatures in St. John's during May?
Prepare for cooler days with highs just around 8° and colder nights, dipping below 2°.
How much rainfall should be expected in St. John's during May?
Significant rainfall exceeding 208.4 mm is expected in St. John's during May, occurring over more than 9 days. Preparing for wet conditions is recommended in your planning.
Is snowfall common in St. John's during May?
St. John's experiences an average snowfall of 0 cm during May, occurring over 0 days, which may interest winter sports enthusiasts.
What are the typical wind conditions in St. John's during May?
The average wind speed in St. John's during May is 26 km/h, suggesting breezy to windy conditions, depending on your activities.
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