Suffolk County (Long Island)
May
Weather in Suffolk County for May 2025
Your guide to Suffolk County weather in May - trends and predictions
Until now, May 2025 in Suffolk County is slightly cooler than the historical average by -0.8 °F.
The forecast for the coming days of May 2025 predicts a temperature of 20.7 °F , which is warmer than usual.
In general, the average temperature in Suffolk County at the beginning of May is 17.3 °F. As the month progressed, temperatures tended to moderately rise, reaching an average of 18.9 °F by the end of May.
The climate of Suffolk County in May is notably wet, with an average of 14 rainy days, and a total of 197.7 mm of precipitation.
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Temperatures
Rain 🌧️
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17
Dry days
14
Rainy days
0
Snow days
19°/13°
Temperatures
19 km/h
Avg max wind
80 %
Avg humidity
Suffolk County Weather May
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Temperatures trend during May in Suffolk County
See the weather trend as well as the moving average line
May weather in Suffolk County day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| May 1 |  Cloudy | 16° /9° | 0 mm | 4 | |
| May 2 |  Overcast | 20° /11° | 7.5 mm | 5 | |
| May 3 | Overcast | 19° /12° | 0.5 mm | 4 | |
| May 4 |  Moderate or heavy rain shower | 17° /12° | 9.9 mm | 4 | |
| May 5 | Moderate or heavy rain shower | 16° /12° | 17.4 mm | 4 | |
| May 6 | Moderate or heavy rain shower | 14° /12° | 68.8 mm | 3 | |
| May 7 | Overcast | 19° /11° | 0 mm | 4 | |
| May 8 | Overcast | 21° /11° | 0 mm | 5 | |
| May 9 | Moderate or heavy rain shower | 15° /12° | 19.3 mm | 4 | |
| May 10 | Overcast | 21° /10° | 0.2 mm | 5 | |
| May 11 |  Partly cloudy | 22° /13° | 0 mm | 6 | |
| May 12 | Partly cloudy | 17° /11° | 0 mm | 5 | |
| May 13 |  Patchy rain possible | 18° /12° | 0.7 mm | 4 | |
| May 14 | Moderate or heavy rain shower | 17° /12° | 16.3 mm | 4 | |
| May 15 |  Fog | 17° /13° | 0 mm | 4 | |
| May 16 | Fog | 19° /14° | 0 mm | 4 | |
| May 17 | Mist | 19° /14° | 0 mm | 4 | |
| May 18 | Overcast | 19° /14° | 0 mm | 4 | |
| May 19 |  Sunny | 20° /10° | 0 mm | 6 | |
| May 20 | Sunny | 17° /8° | 0 mm | 5 | |
| May 21 | Sunny | 16° /10° | 5.2 mm | 4 | |
| May 22 | Partly cloudy | 16° /11° | 33.8 mm | 5 | |
| May 23 | Moderate or heavy rain shower | 18° /10° | 4 mm | 4 | |
| May 24 | Overcast | 21° /12° | 0 mm | 5 | |
| May 25 | Partly cloudy | 21° /12° | 0 mm | 6 | |
| May 26 | Moderate rain at times | 21° /13° | 0.5 mm | 5 | |
| May 27 | Moderate or heavy rain shower | 19° /12° | 12.6 mm | 4 | |
| May 28 | Patchy rain possible | 18° /12° | 1.5 mm | 1.2 | |
| May 29 |  Heavy rain | 16° /12° | 25.4 mm | 0.5 | |
| May 30 |  Moderate rain | 20° /14° | 6.7 mm | 0.2 | |
| May 31 | Heavy rain | 17° /14° | 42.8 mm | 4 | |
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Important Notice
Our weather forecast for Suffolk County 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 Suffolk County forecast closer to your planned date for the most up-to-date weather information.
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Suffolk County in May - FAQ
What are the expected maximum and minimum temperatures in Suffolk County during May?
Enjoy moderate daytime temperatures of up to 19° and cooler nights around 13°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Suffolk County during May?
Significant rainfall exceeding 197.7 mm is expected in Suffolk County during May, occurring over more than 14 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Suffolk County during May?
The average wind speed in Suffolk County during May is 19 km/h, suggesting breezy to windy conditions, depending on your activities.
May rainfall patterns in Suffolk County
Explore the daily rainfall trends and prepare for Suffolk Countys May weather 💧
UV exposure in Suffolk County during May
Stay informed about UV levels for safe outdoor activities throughout the month of May ☀️
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