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Weather in Saint John for May 2025

Your guide to Saint John weather in May - trends and predictions

  • In general, the average temperature in Saint John at the beginning of May is 11.6 °C. As the month progressed, temperatures tended to significantly warm up, reaching an average of 16.7 °C by the end of May.

  • With an average of 5 rainy days, Saint John experiences minimal rainfall in May, ensuring that most days remain pleasantly dry.

  • New! Chat with our AI weatherman - it’s amazing and free.
Average dry days
26
Dry days
Average rainy days
5
Rainy days
Average snowy days
0
Snow days
Average temperatures
15°/5°
Temperatures
Average wind speed
19 km/h
Avg max wind
Average humidity
75 %
Avg humidity

Saint John in May average weather

Move between months or click on a day
April
June
Mon.Tue.Wed.Thu.Fri.Sat.Sun.
1
Moderate or heavy rain shower
10°
2
Overcast
12°
3
Patchy rain possible
8°
4
Patchy rain possible
9°
5
Overcast
13°
6
Overcast
13°
7
Partly cloudy
16°
8
Patchy rain possible
13°
9
Overcast
11°
10
Overcast
13°
11
Cloudy
14°
12
Partly cloudy
14°
13
Moderate rain at times
15°
14
Overcast
11°
15
Cloudy
17°
16
Moderate rain at times
15°
17
Moderate rain at times
15°
18
Partly cloudy
14°
19
Overcast
12°
20
Cloudy
15°
21
Moderate or heavy rain shower
14°
22
Sunny
15°
23
Sunny
15°
24
Sunny
15°
25
Patchy rain possible
15°
26
Patchy rain possible
13°
27
Partly cloudy
18°
28
Partly cloudy
19°
29
Sunny
17°
30
Partly cloudy
17°
31
Sunny
18°
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Temperatures trend during May in Saint John

See the weather trend as well as the moving average line

May weather day by day

Click on a date for more information
April June
Date Weather Temperatures Rain UV More
1 May Moderate or heavy rain shower
Moderate or heavy rain shower
 10° /4° 19.2 mm 3
2 May Overcast
Overcast
 12° /5° 0.3 mm 3
3 May Patchy rain possible
Patchy rain possible
 8° /3° 0.3 mm 3
4 May Patchy rain possible
Patchy rain possible
 9° /3° 1.2 mm 3
5 May Overcast
Overcast
 13° /3° 0 mm 4
6 May Overcast
Overcast
 13° /4° 1.4 mm 3
7 May Partly cloudy
Partly cloudy
 16° /6° 0 mm 5
8 May Patchy rain possible
Patchy rain possible
 13° /3° 1.5 mm 3
9 May Overcast
Overcast
 11° /3° 0.7 mm 3
10 May Overcast
Overcast
 13° /1° 0 mm 4
11 May Cloudy
Cloudy
 14° /5° 0.1 mm 4
12 May Partly cloudy
Partly cloudy
 14° /3° 0 mm 4
13 May Moderate rain at times
Moderate rain at times
 15° /5° 1.6 mm 4
14 May Overcast
Overcast
 11° /4° 1.5 mm 3
15 May Cloudy
Cloudy
 17° /5° 0.1 mm 4
16 May Moderate rain at times
Moderate rain at times
 15° /7° 4.2 mm 4
17 May Moderate rain at times
Moderate rain at times
 15° /5° 2.5 mm 4
18 May Partly cloudy
Partly cloudy
 14° /4° 0 mm 4
19 May Overcast
Overcast
 12° /6° 2.7 mm 3
20 May Cloudy
Cloudy
 15° /7° 0.3 mm 4
21 May Moderate or heavy rain shower
Moderate or heavy rain shower
 14° /9° 26.8 mm 3
22 May Sunny
Sunny
 15° /7° 0.9 mm 4
23 May Sunny
Sunny
 15° /5° 2.7 mm 5
24 May Sunny
Sunny
 15° /7° 0.2 mm 4
25 May Patchy rain possible
Patchy rain possible
 15° /6° 0.4 mm 4
26 May Patchy rain possible
Patchy rain possible
 13° /6° 0.6 mm 3
27 May Partly cloudy
Partly cloudy
 18° /6° 0 mm 5
28 May Partly cloudy
Partly cloudy
 19° /9° 6.8 mm 5
29 May Sunny
Sunny
 17° /8° 0.3 mm 5
30 May Partly cloudy
Partly cloudy
 17° /6° 0 mm 5
31 May Sunny
Sunny
 18° /6° 0 mm 5
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Important Notice
Our weather forecast for Saint John 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 Saint John forecast closer to your planned date for the most up-to-date weather information.

Saint John in May - FAQ

What are the expected maximum and minimum temperatures in Saint John during May?
During May, expect a variety of temperatures with highs around 15° and lows near 5°, suitable for diverse activities and preferences.
How much rainfall should be expected in Saint John during May?
Significant rainfall exceeding 138.3 mm is expected in Saint John during May, occurring over more than 5 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Saint John during May?
The average wind speed in Saint John during May is 19 km/h, suggesting breezy to windy conditions, depending on your activities.

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Location coordinates Where is Saint John?

Get accurate weather forecasts for Saint John, located at latitude 45.271 and longitude -66.056. Stay updated with localized weather information tailored for Saint John.

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