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May Weather in Harwich, United Kingdom

Last updated: August 27, 2025

In May, the average temperature in Harwich, United Kingdom hovers around 12°C (54°F). Expect a comfortable range, with minimums dipping to 4°C (39°F) and maximums reaching up to 21°C (71°F). During this month, anticipate about 57 mm (2.2 in) of precipitation spread over 11 days, and don't forget to brace for the moist air, as the average humidity is a high 82%.

May Temperature in Harwich

In May in Harwich, the average temperature is 12°C (54°F). Maximum temperatures can reach 21°C (71°F), while minimums can drop as low as 4°C (39°F). This mild climate makes Harwich a great destination for outdoor activities and exploring during this time of year.

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

The chart illustrates May temperature patterns in Harwich, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Harwich, May typically has an average temperature of 12°C (54°F), with highs reaching up to 21°C (71°F) and lows dropping to around 4°C (39°F).
JanFebMarAprMayJunJulAugSepOctNovDec414345485461646460554844
Data source: Temperature data for 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 Harwich

In Harwich in May, the precipitation amount is 57 mm (2.2 in) spread over 11 days.

May Precipitation Trends in Harwich

The chart displays monthly precipitation patterns in 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 Harwich, May typically receives around 57 mm (2.2 inches) of precipitation spread over approximately 11 days.
JanFebMarAprMayJunJulAugSepOctNovDec5964562557646675579255101
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Harwich

In Harwich in May humidity is 82%. With an average temperature of 12°C (54°F), this humidity feels like a heavy blanket wrapping around you, making every step feel sluggish and sweat-inducing, which can be quite uncomfortable for traveling.

May Average Humidity in Harwich

This chart illustrates the average monthly humidity levels in 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 Harwich is approximately 82%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec91%89%86%85%82%81%76%73%80%89%92%92%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Harwich

In Harwich in May, the maximum UV index is 7, which corresponds to the high Exposure Category. This means that the time to burn is approximately 25 minutes. For more detailed information, you can check the Hourly UV Index in Harwich.

Maximum UV Index Levels in Harwich for May

The chart shows the monthly maximum UV Index (UVI) for 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 Harwich typically reaches 7, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec124578875321
Data source: 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 Harwich Compares to Other Months

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

This table compares monthly weather conditions in Harwich, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather5°C (42°F)59 mm (2.3 inches)91%low
February Weather6°C (43°F)64 mm (2.5 inches)89%low
March Weather7°C (45°F)56 mm (2.2 inches)86%moderate
April Weather9°C (48°F)25 mm (1.0 inches)85%moderate
May Weather12°C (54°F)57 mm (2.2 inches)82%high
June Weather16°C (61°F)64 mm (2.5 inches)81%very high
July Weather18°C (64°F)66 mm (2.6 inches)76%very high
August Weather18°C (65°F)75 mm (2.9 inches)73%high
September Weather16°C (61°F)57 mm (2.3 inches)80%moderate
October Weather13°C (55°F)92 mm (3.6 inches)89%moderate
November Weather9°C (48°F)55 mm (2.2 inches)92%low
December Weather7°C (44°F)101 mm (4.0 inches)92%low

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