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May Weather in Annan, United Kingdom

Last updated: August 27, 2025

In May, the average temperature in Annan, United Kingdom is a mild 11°C (53°F). Expect a variety of conditions, with temperatures ranging from a chilly -1°C (30°F) to a warm 27°C (80°F). Prepare for some rain, as 61 mm (2.4 in) of precipitation can be expected over 13 days. With an average humidity of 80%, it’s a great time to enjoy the refreshing atmosphere!

May Temperature in Annan

In May in Annan, the average temperature is 11°C (53°F), with maximums reaching 27°C (80°F) and minimums dropping as low as -1°C (30°F). This wide range of temperatures makes it essential to pack layers when traveling to Annan during this time.

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

The chart illustrates May temperature patterns in Annan, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Annan, May typically has an average temperature of 11°C (53°F), with highs reaching up to 27°C (80°F) and lows dropping to around -1°C (30°F).
JanFebMarAprMayJunJulAugSepOctNovDec404143475258616055504541
Data source: Temperature data for Annan 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 Annan

In Annan in May, the precipitation amount is 61 mm (2.4 in) occurring over the course of 13 days.

May Precipitation Trends in Annan

The chart displays monthly precipitation patterns in Annan, 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 Annan, May typically receives around 61 mm (2.4 inches) of precipitation spread over approximately 13 days.
JanFebMarAprMayJunJulAugSepOctNovDec7412196416194871178713194101
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Annan

In Annan in May, humidity is 80%. With an average temperature of 11°C (53°F), this humidity feels like a damp blanket wrapped around you, making it slightly uncomfortable for traveling, as the cool air mixes with the moisture, leaving you feeling chilly and a bit sticky at the same time.

May Average Humidity in Annan

This chart illustrates the average monthly humidity levels in Annan, 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 Annan is approximately 80%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec90%88%86%85%81%83%82%82%88%90%92%89%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Annan

In Annan in May, the maximum UV index is 6, which corresponds to a high Exposure Category. The time to burn is approximately 25 minutes. To find the hourly UV index in Annan, you can refer to this Hourly UV Index in Annan.

Maximum UV Index Levels in Annan for May

The chart shows the monthly maximum UV Index (UVI) for Annan 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 Annan typically reaches 6, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec123568865321
Data source: Annan 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 Annan Compares to Other Months

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

This table compares monthly weather conditions in Annan, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather5°C (40°F)74 mm (2.9 inches)90%low
February Weather5°C (42°F)121 mm (4.8 inches)88%low
March Weather6°C (44°F)96 mm (3.8 inches)86%moderate
April Weather8°C (47°F)41 mm (1.6 inches)85%moderate
May Weather11°C (53°F)61 mm (2.4 inches)80%high
June Weather14°C (58°F)94 mm (3.7 inches)83%very high
July Weather16°C (61°F)87 mm (3.4 inches)82%very high
August Weather15°C (60°F)117 mm (4.6 inches)82%high
September Weather13°C (56°F)87 mm (3.4 inches)88%moderate
October Weather10°C (51°F)131 mm (5.2 inches)90%moderate
November Weather7°C (45°F)94 mm (3.7 inches)92%low
December Weather5°C (42°F)101 mm (4.0 inches)89%low

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