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May Weather in Forfar, United Kingdom

Last updated: August 27, 2025

In Forfar, United Kingdom, the average temperature for May rests at a cool 9°C (49°F). However, temperatures can vary significantly, with a minimum of -2°C (29°F) and a pleasant maximum of 23°C (74°F). Expect a total precipitation of 92 mm (3.6 in) over approximately 15 days, accompanied by an average humidity level of 82%. This blend of conditions creates a unique and invigorating climate!

May Temperature in Forfar

In May in Forfar, the average temperature is 9°C (49°F). Maximums can reach 23°C (74°F), and minimums can drop as low as -2°C (29°F). Travelers should be prepared for varying weather conditions, ranging from mild to chilly.

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

The chart illustrates May temperature patterns in Forfar, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Forfar, May typically has an average temperature of 9°C (49°F), with highs reaching up to 23°C (74°F) and lows dropping to around -2°C (29°F).
JanFebMarAprMayJunJulAugSepOctNovDec373740434954585753474138
Data source: Temperature data for Forfar 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 Forfar

In Forfar in May, the precipitation amount is 92 mm (3.6 in) distributed over 15 days.

May Precipitation Trends in Forfar

The chart displays monthly precipitation patterns in Forfar, 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 Forfar, May typically receives around 92 mm (3.6 inches) of precipitation spread over approximately 15 days.
JanFebMarAprMayJunJulAugSepOctNovDec501008243928396101741069791
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Forfar

In Forfar in May, humidity is 82%. With an average temperature of 9°C (49°F), this humidity feels like a damp chill that clings to your skin, making outdoor activities less enjoyable and prompting travelers to seek warmth indoors or in cozy cafes.

May Average Humidity in Forfar

This chart illustrates the average monthly humidity levels in Forfar, 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 Forfar is approximately 82%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec89%88%86%84%82%84%86%86%90%91%92%89%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Forfar

In Forfar 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 Forfar, you can refer to this Hourly UV Index in Forfar.

Maximum UV Index Levels in Forfar for May

The chart shows the monthly maximum UV Index (UVI) for Forfar 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 Forfar typically reaches 6, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec123568765311
Data source: Forfar 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 Forfar Compares to Other Months

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

This table compares monthly weather conditions in Forfar, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather3°C (37°F)50 mm (2.0 inches)89%low
February Weather3°C (38°F)100 mm (3.9 inches)88%low
March Weather4°C (40°F)82 mm (3.2 inches)86%moderate
April Weather6°C (43°F)43 mm (1.7 inches)84%moderate
May Weather9°C (49°F)92 mm (3.6 inches)82%high
June Weather12°C (55°F)83 mm (3.3 inches)84%very high
July Weather14°C (58°F)96 mm (3.8 inches)86%high
August Weather14°C (57°F)101 mm (4.0 inches)86%high
September Weather11°C (53°F)74 mm (2.9 inches)90%moderate
October Weather8°C (47°F)106 mm (4.2 inches)91%moderate
November Weather5°C (42°F)97 mm (3.8 inches)92%low
December Weather3°C (38°F)91 mm (3.6 inches)88%low

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