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May Weather in East Harwich, United States

Last updated: June 24, 2025

In May, the average temperature in East Harwich, United States rests at a comfortable 11°C (52°F). Expect minimums dipping to 5°C (41°F) and maximums soaring up to 19°C (66°F). With an average precipitation of 121 mm (4.8 in) over 12 days, you might need an umbrella, as the air retains a high humidity of 75%.

May Temperature in East Harwich

In May in East Harwich, the average temperature is 11°C (52°F). The maximum can reach 19°C (66°F), while the minimum can drop as low as 5°C (41°F). This mild weather makes it an ideal time for exploring the sights and enjoying outdoor activities.

May Weather in East Harwich: Daily Temperature Highs, Lows, and Averages

The chart illustrates May temperature patterns in East Harwich, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In East Harwich, May typically has an average temperature of 11°C (52°F), with highs reaching up to 19°C (66°F) and lows dropping to around 5°C (41°F).
JanFebMarAprMayJunJulAugSepOctNovDec363638455261697066594840
Data source: Temperature data for East Harwich 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 East Harwich

In East Harwich in May, the precipitation amount reaches 121 mm (4.8 in) over the course of 12 days.

May Precipitation Trends in East Harwich

The chart displays monthly precipitation patterns in East Harwich, 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 East Harwich, May typically receives around 121 mm (4.8 inches) of precipitation spread over approximately 12 days.
JanFebMarAprMayJunJulAugSepOctNovDec95124119131121887783116169106138
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in East Harwich

In East Harwich in May, humidity is 75%. With an average temperature of 11°C (52°F), this humidity feels like a damp chill that seeps into your bones, making outdoor exploration a little less inviting and prompting the need for warm layers.

May Average Humidity in East Harwich

This chart illustrates the average monthly humidity levels in East Harwich, 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 East Harwich 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 East Harwich

In East Harwich 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 East Harwich.

Maximum UV Index Levels in East Harwich for May

The chart shows the monthly maximum UV Index (UVI) for East Harwich 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 East Harwich typically reaches 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec34689101098642
Data source: East Harwich 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 East Harwich Compares to Other Months

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

This table compares monthly weather conditions in East Harwich, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather2°C (37°F)94 mm (3.7 inches)84%moderate
February Weather2°C (37°F)124 mm (4.9 inches)84%moderate
March Weather3°C (38°F)119 mm (4.7 inches)82%high
April Weather7°C (45°F)131 mm (5.1 inches)79%very high
May Weather11°C (52°F)121 mm (4.8 inches)75%very high
June Weather16°C (61°F)88 mm (3.5 inches)78%very high
July Weather20°C (69°F)77 mm (3.0 inches)76%very high
August Weather21°C (71°F)83 mm (3.3 inches)76%very high
September Weather19°C (66°F)116 mm (4.6 inches)75%very high
October Weather15°C (59°F)169 mm (6.7 inches)75%high
November Weather9°C (49°F)106 mm (4.2 inches)80%moderate
December Weather5°C (41°F)138 mm (5.4 inches)80%low

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