nomadseason

May Weather in Falmouth, United States

Last updated: June 24, 2025

The average temperature in Falmouth, United States during May is a comfortable 19°C (66°F). However, be prepared for a variety of conditions, as temperatures can dip as low as 0°C (33°F) and soar up to 32°C (90°F). Expect 132 mm (5.2 in) of precipitation spread over 15 days, and remember that the average humidity remains fairly high at 81%.

May Temperature in Falmouth

In May, in Falmouth, the average temperature is 19°C (66°F). The maximum can reach 32°C (90°F), and the minimum can be as low as 0°C (33°F). Therefore, it's advisable to pack layers and be prepared for a range of weather conditions while traveling.

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

The chart illustrates May temperature patterns in Falmouth, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Falmouth, May typically has an average temperature of 19°C (66°F), with highs reaching up to 32°C (90°F) and lows dropping to around 0°C (33°F).
JanFebMarAprMayJunJulAugSepOctNovDec343846556673777570594439
Data source: Temperature data for Falmouth generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

May Precipitation in Falmouth

In Falmouth in May, the precipitation amount is 132 mm (5.2 in), occurring over a span of 15 days.

May Precipitation Trends in Falmouth

The chart displays monthly precipitation patterns in Falmouth, 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 Falmouth, May typically receives around 132 mm (5.2 inches) of precipitation spread over approximately 15 days.
JanFebMarAprMayJunJulAugSepOctNovDec851251301371321721259311010391121
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

May Humidity in Falmouth

In Falmouth in May, humidity is 81%. With an average temperature of 19°C (66°F), this humidity feels like a warm, heavy blanket enveloping you, making travel feel both muggy and slightly stifling, often leading to a need for frequent breaks in the shade.

May Average Humidity in Falmouth

This chart illustrates the average monthly humidity levels in Falmouth, 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 Falmouth is approximately 81%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec88%88%87%85%81%82%81%73%73%78%89%87%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Falmouth

In Falmouth in May, the maximum UV index reaches 10, which corresponds to a very high Exposure Category. With a time to burn of just 15 minutes, it's crucial to take precautions. For more detailed information, you can check the Hourly UV Index in Falmouth.

Maximum UV Index Levels in Falmouth for May

The chart shows the monthly maximum UV Index (UVI) for Falmouth 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 Falmouth typically reaches 10, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec357910101098643
Data source: Falmouth 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 Falmouth Compares to Other Months

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

This table compares monthly weather conditions in Falmouth, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather1°C (35°F)85 mm (3.4 inches)88%moderate
February Weather4°C (39°F)125 mm (4.9 inches)88%moderate
March Weather8°C (46°F)130 mm (5.1 inches)87%high
April Weather13°C (55°F)137 mm (5.4 inches)85%very high
May Weather19°C (66°F)132 mm (5.2 inches)81%very high
June Weather23°C (73°F)172 mm (6.8 inches)82%very high
July Weather25°C (77°F)125 mm (4.9 inches)81%very high
August Weather24°C (75°F)93 mm (3.7 inches)73%very high
September Weather21°C (71°F)110 mm (4.3 inches)73%very high
October Weather15°C (60°F)103 mm (4.1 inches)78%high
November Weather7°C (45°F)91 mm (3.6 inches)89%moderate
December Weather4°C (40°F)121 mm (4.8 inches)87%moderate

Compare Falmouth's Climate with Cities Worldwide