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May Weather in Hartford, United Kingdom

Last updated: August 27, 2025

In Hartford, United Kingdom, the average temperature in May hovers around 12°C (54°F), providing a comfortable climate. Be prepared for minimum lows of 1°C (33°F) and maximum highs of 27°C (80°F) throughout the month. Additionally, expect around 69 mm (2.7 in) of precipitation spread over approximately 12 days, and humidity levels reaching an average of 79%.

May Temperature in Hartford

In May in Hartford, the average temperature is 12°C (54°F). Maximums can reach 27°C (80°F), and minimums can drop as low as 1°C (33°F). It’s advisable to prepare for a range of weather conditions when traveling to Hartford during this time.

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

The chart illustrates May temperature patterns in Hartford, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Hartford, May typically has an average temperature of 12°C (54°F), with highs reaching up to 27°C (80°F) and lows dropping to around 1°C (33°F).
JanFebMarAprMayJunJulAugSepOctNovDec414245485460626157524642
Data source: Temperature data for Hartford 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 Hartford

In Hartford in May, the precipitation amount is 69 mm (2.7 in) over the span of 12 days.

May Precipitation Trends in Hartford

The chart displays monthly precipitation patterns in Hartford, 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 Hartford, May typically receives around 69 mm (2.7 inches) of precipitation spread over approximately 12 days.
JanFebMarAprMayJunJulAugSepOctNovDec698188506994102108931067997
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Hartford

In Hartford in May, humidity is 79%. With an average temperature of 12°C (54°F), this humidity makes traveling feel quite muggy, leading to a sticky discomfort that can sap your energy and make outdoor activities less enjoyable.

May Average Humidity in Hartford

This chart illustrates the average monthly humidity levels in Hartford, 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 Hartford is approximately 79%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec89%88%86%85%79%81%78%79%85%90%91%89%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Hartford

In Hartford 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 Hartford.

Maximum UV Index Levels in Hartford for May

The chart shows the monthly maximum UV Index (UVI) for Hartford 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 Hartford typically reaches 7, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec123578875421
Data source: Hartford 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 Hartford Compares to Other Months

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

This table compares monthly weather conditions in Hartford, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather5°C (41°F)69 mm (2.7 inches)89%low
February Weather6°C (43°F)81 mm (3.2 inches)88%low
March Weather7°C (45°F)88 mm (3.5 inches)86%moderate
April Weather9°C (48°F)50 mm (2.0 inches)84%moderate
May Weather12°C (54°F)69 mm (2.7 inches)79%high
June Weather15°C (60°F)94 mm (3.7 inches)81%very high
July Weather17°C (63°F)102 mm (4.0 inches)78%very high
August Weather16°C (61°F)108 mm (4.3 inches)79%high
September Weather14°C (57°F)93 mm (3.7 inches)85%moderate
October Weather11°C (52°F)106 mm (4.2 inches)90%moderate
November Weather8°C (46°F)79 mm (3.1 inches)91%low
December Weather6°C (43°F)97 mm (3.8 inches)89%low

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