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United StatesThe weather in May in Maine
It's cool to moderate in May in Maine with an average temperature of 18°C. Temperatures this month range from a low of 12°C to a high of 22°C. At night, you can expect temperatures between 2°C and 11°C.
Looking for great weather? May is a good time to be in Maine. The temperatures are nice, and there’s not too much rain.
Average temperatures and precipitation
This chart shows the average daily maximum and minimum temperatures (in degrees Celsius) and precipitation (in millimeters) in May for Maine, United States. A low precipitation value usually indicates little to no rainfall on that day in recent years, while a higher value suggests more frequent rainfall.
Temperature records
With 32°C in 2017, Maine reached the highest temperature in May over the past 10 years. The lowest daytime temperature in this month was 4°C in 2020. The extreme nighttime temperatures ranged from a lowest recorded value of -1°C to a highest value of 19°C.
Precipitation and snowfall
In May, there is an average of 77 mm of precipitation, spread over 11 days. Of the total precipitation, about 1,2 cm falls as snow in May. The wind speed is around 4 Bft, mostly coming from the Southwest.
Daily weather in May for Maine
Click on any day in May to get detailed info about the usual weather on that day in Maine. Check out the historical temperatures and precipitation over the past 10 years on this day.
May weather comparison
| Maine | New York | |
|---|---|---|
| Average temperature | 18°C | 22°C |
| Max. temperature | 22°C | 28°C |
| Min. temperature | 2°C | -5°C |
| Total precipitation | 77 mm | 105 mm |
| Rainy days | 11 days | 14 days |
| Total snowfall | 1,2 cm | 0 cm |
| Snowy days | 1 day | 0 days |
Start of May
The month of May starts in Maine with cool temps, averaging around 15°C during the day and nights around 5°C.
Mid May
By mid-May, daytime temps rise to around 18°C, with nights around 8°C. There’s a chance of some showers during this time, but plenty of dry and sunny days too.
End of May
By the end of May, the average daytime temperature in Maine is around 21°C, while nighttime temps are about 10°C. A shower might pop up, but overall, the weather will be dry and sunny.
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UV index
The UV index is a maximum of 9 this month. That's a very high value on the intensity scale of 1 to 11. Unprotected skin can burn within 10-15 minutes.
Check out the climate of Maine for all months and discover the best travel time
The climate in Maine is based on weather data from . Other places, like New York City, Miami or Los Angeles, might have different weather. You can check out all destinations in Maine to get the full picture of the climate.
Temperature charts
These charts show the average temperatures in May in Maine, United States. The temperatures are shown in degrees Celsius and are calculated based on data from the past 10 years.
Daily Temperature in May in Maine
Temperature in May in Maine over the years
Precipitation charts
These charts show the average amount of precipitation in May in Maine, United States. Precipitation is always measured as water, even when it falls as snow or hail The amount of precipitation is displayed in millimeters, while snowfall is shown in centimeters.
Daily Precipitation in May in Maine
Total precipitation in May in Maine over the years
Daily Snowfall in May in Maine
Snowfall in May in Maine per year
Daily UV index in May in Maine
This chart shows the average daily UV index in May in Maine, with the UV index ranging from 0 to a maximum of 11. The bottom of the chart shows the days of the month. Based on historical data, this chart provides an idea of the daily UV radiation levels you can expect.
Weather experiences in May in Maine
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Average weather in Maine by month
Click on a month below to see detailed weather info for Maine. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.