Boston
May
Weather in Boston for May 2026
Your guide to Boston weather in May - trends and predictions
In general, the average temperature in Boston at the beginning of May is 14.7 °C. As the month progressed, temperatures tended to significantly warm up, reaching an average of 18.4 °C by the end of May.
The climate of Boston in May is notably wet, with an average of 13 rainy days, and a total of 31.7 mm of precipitation.
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Temperatures
Rain 🌧️
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18
Dry days
13
Rainy days
0
Snow days
17°/8°
Temperatures
24 km/h
Avg max wind
77 %
Avg humidity
Boston Weather May
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Temperatures trend during May in Boston
See the weather trend as well as the moving average line
May weather in Boston day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 May |  Overcast | 24° /9° | 0 mm | 5 | |
| 2 May | Overcast | 16° /9° | 0 mm | 4 | |
| 3 May |  Patchy rain possible | 16° /7° | 0.1 mm | 4 | |
| 4 May | Patchy rain possible | 10° /4° | 1.1 mm | 3 | |
| 5 May | Patchy rain possible | 12° /4° | 0.4 mm | 3 | |
| 6 May | Patchy rain possible | 13° /5° | 0.3 mm | 3 | |
| 7 May | Overcast | 12° /4° | 0 mm | 3 | |
| 8 May | Patchy rain possible | 13° /5° | 0.3 mm | 3 | |
| 9 May |  Sunny | 16° /6° | 0 mm | 5 | |
| 10 May |  Cloudy | 18° /6° | 0 mm | 4 | |
| 11 May | Sunny | 19° /9° | 0 mm | 5 | |
| 12 May | Sunny | 20° /11° | 0 mm | 6 | |
| 13 May | Sunny | 17° /9° | 0 mm | 5 | |
| 14 May | Overcast | 16° /7° | 0 mm | 4 | |
| 15 May | Patchy rain possible | 14° /6° | 0.2 mm | 3 | |
| 16 May |  Partly cloudy | 16° /5° | 0 mm | 5 | |
| 17 May | Overcast | 17° /6° | 0 mm | 4 | |
| 18 May | Overcast | 15° /8° | 0 mm | 4 | |
| 19 May | Cloudy | 15° /7° | 0 mm | 4 | |
| 20 May | Cloudy | 17° /6° | 0 mm | 4 | |
| 21 May | Patchy rain possible | 17° /8° | 0.2 mm | 4 | |
| 22 May | Patchy rain possible | 14° /6° | 1 mm | 3 | |
| 23 May | Overcast | 16° /3° | 0 mm | 4 | |
| 24 May |  Heavy rain at times | 20° /9° | 6.3 mm | 4 | |
| 25 May | Light rain shower | 17° /9° | 1.4 mm | 4 | |
| 26 May | Light rain shower | 15° /7° | 1.5 mm | 4 | |
| 27 May |  Light rain | 16° /10° | 7.8 mm | 4 | |
| 28 May | Light rain shower | 18° /11° | 4.4 mm | 4 | |
| 29 May | Light rain | 21° /11° | 5.3 mm | 5 | |
| 30 May | Patchy rain possible | 21° /12° | 0.5 mm | 5 | |
| 31 May | Light rain shower | 21° /12° | 0.9 mm | 5 | |
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Important Notice
Our weather forecast for Boston 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 Boston forecast closer to your planned date for the most up-to-date weather information.
Change Month
Boston in May - FAQ
What are the expected maximum and minimum temperatures in Boston during May?
Enjoy moderate daytime temperatures of up to 17° and cooler nights around 8°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Boston during May?
In May, Boston can expect light to moderate rainfall, totaling 31.7 mm across approximately 13 days. Occasional showers are possible, and planning ahead for them could be helpful.
What are the typical wind conditions in Boston during May?
The average wind speed in Boston during May is 24 km/h, suggesting breezy to windy conditions, depending on your activities.
May rainfall patterns in Boston
Explore the daily rainfall trends and prepare for Bostons May weather 💧
UV exposure in Boston during May
Stay informed about UV levels for safe outdoor activities throughout the month of May ☀️
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