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May Weather in Westerly, United States

Last updated: June 24, 2025

In Westerly, United States, the average temperature in May hovers around 14°C (58°F). Expect a range from a cool 2°C (36°F) to a warm 31°C (87°F). With 111 mm (4.4 in) of precipitation spread over 12 days, the air tends to be quite humid with an average of 75% humidity. Plan accordingly to enjoy your time in this diverse climate!

May Temperature in Westerly

In May in Westerly, the average temperature is 14°C (58°F). Maximums can reach 31°C (87°F) and minimums can drop as low as 2°C (36°F). Travelers should pack for a range of weather conditions to fully enjoy their stay.

May Weather in Westerly: Daily Temperature Highs, Lows, and Averages

The chart illustrates May temperature patterns in Westerly, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Westerly, May typically has an average temperature of 14°C (58°F), with highs reaching up to 31°C (87°F) and lows dropping to around 2°C (36°F).
JanFebMarAprMayJunJulAugSepOctNovDec333539485867747367584537
Data source: Temperature data for Westerly generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

May Precipitation in Westerly

In Westerly, in May, the precipitation amount is 111 mm (4.4 in) over a span of 12 days.

May Precipitation Trends in Westerly

The chart displays monthly precipitation patterns in Westerly, with values for each month alongside May’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how May’s conditions compare to those of other months. In Westerly, May typically receives around 111 mm (4.4 inches) of precipitation spread over approximately 12 days.
JanFebMarAprMayJunJulAugSepOctNovDec73951011251119512810293134100125
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Westerly

In Westerly in May humidity is 75%. With an average temperature of 14°C (58°F), this humidity feels like a lingering blanket of warmth, making travel both refreshing and a bit stifling, as the moisture in the air may leave you feeling slightly sticky while enjoying outdoor adventures.

May Average Humidity in Westerly

This chart illustrates the average monthly humidity levels in Westerly, with May’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In May, average humidity in Westerly is approximately 75%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec84%84%82%79%75%78%76%76%76%75%80%80%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Westerly

In Westerly in May, the maximum UV index is 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For detailed information, you can check the Hourly UV Index in Westerly.

Maximum UV Index Levels in Westerly for May

The chart shows the monthly maximum UV Index (UVI) for Westerly in May, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In May, the maximum UV index in Westerly typically reaches 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3568910998642
Data source: Westerly May UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

How May Weather in Westerly Compares to Other Months

Weather in Westerly varies notably across the year, with each month offering distinct climate conditions. This page compares May’s weather to other months in Westerly, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Westerly, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather0°C (33°F)73 mm (2.9 inches)84%moderate
February Weather2°C (35°F)95 mm (3.7 inches)84%moderate
March Weather4°C (39°F)101 mm (4.0 inches)82%high
April Weather9°C (48°F)125 mm (4.9 inches)79%very high
May Weather14°C (58°F)111 mm (4.4 inches)75%very high
June Weather20°C (68°F)95 mm (3.7 inches)78%very high
July Weather23°C (74°F)128 mm (5.0 inches)76%very high
August Weather23°C (74°F)102 mm (4.0 inches)76%very high
September Weather19°C (67°F)93 mm (3.7 inches)75%very high
October Weather14°C (58°F)134 mm (5.3 inches)75%high
November Weather7°C (46°F)100 mm (3.9 inches)80%moderate
December Weather3°C (37°F)125 mm (4.9 inches)80%low

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