May Weather in Bethel Island, United States

Last updated: June 24, 2025

In Bethel Island, United States, the average temperature in May is a pleasant 18°C (65°F). However, be prepared for fluctuations, as temperatures can dip to a refreshing 7°C (45°F) or soar to a scorching 37°C (99°F). Expect a modest precipitation amount of 15 mm (0.6 in) spread over 2 days, and experience an average humidity of 71%. 🌦️

May Temperature in Bethel Island

In May in Bethel Island, the average temperature is 18°C (65°F). Maximums can reach 37°C (99°F) and minimums can be as low as 7°C (45°F). It's an ideal time for travelers seeking mild weather while still being prepared for a range of temperatures.

May Weather in Bethel Island: Daily Temperature Highs, Lows, and Averages

The chart illustrates May temperature patterns in Bethel Island, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Bethel Island, May typically has an average temperature of 18°C (65°F), with highs reaching up to 37°C (99°F) and lows dropping to around 7°C (45°F).
JanFebMarAprMayJunJulAugSepOctNovDec505356616570717170645650
Data source: Temperature data for Bethel Island 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 Bethel Island

In Bethel Island in May, the precipitation amount is 15 mm (0.6 in) over the course of 2 days.

May Precipitation Trends in Bethel Island

The chart displays monthly precipitation patterns in Bethel Island, 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 Bethel Island, May typically receives around 15 mm (0.6 inches) of precipitation spread over approximately 2 days.
JanFebMarAprMayJunJulAugSepOctNovDec100877030151001263883
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Bethel Island

In Bethel Island in May humidity is 71%. With an average temperature of 18°C (65°F), this humidity feels like a warm embrace, making it a bit sticky and muggy, which can be slightly uncomfortable for traveling, especially if you're engaging in outdoor activities or exploring the city on foot.

May Average Humidity in Bethel Island

This chart illustrates the average monthly humidity levels in Bethel Island, 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 Bethel Island is approximately 71%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec82%84%82%78%71%64%59%54%55%62%78%80%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Bethel Island

In Bethel Island 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 Bethel Island.

Maximum UV Index Levels in Bethel Island for May

The chart shows the monthly maximum UV Index (UVI) for Bethel Island 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 Bethel Island typically reaches 10, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3589101111109643
Data source: Bethel Island 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 Bethel Island Compares to Other Months

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

This table compares monthly weather conditions in Bethel Island, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather10°C (50°F)100 mm (4.0 inches)82%moderate
February Weather11°C (53°F)87 mm (3.4 inches)84%moderate
March Weather13°C (56°F)70 mm (2.7 inches)82%very high
April Weather16°C (61°F)30 mm (1.2 inches)78%very high
May Weather18°C (65°F)15 mm (0.6 inches)71%very high
June Weather21°C (70°F)1 mm (0.1 inches)64%extreme
July Weather22°C (71°F)0 mm (0.0 inches)58%extreme
August Weather22°C (71°F)0 mm (0.0 inches)54%very high
September Weather21°C (70°F)1 mm (0.0 inches)55%very high
October Weather18°C (64°F)26 mm (1.0 inches)62%high
November Weather13°C (56°F)38 mm (1.5 inches)78%moderate
December Weather10°C (50°F)83 mm (3.3 inches)80%moderate

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