United StatesAverage weather for Maine in May
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.
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. A few showers might pop up early in the month, but overall, it’ll stay mostly sunny and dry.
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.
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.
Maine in May |
New York | ||
|---|---|---|---|
 Average temperature |
18°C | 22°C | |
 Max. temperature |
22°C | 28°C | |
| Min. temperature |
12°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 | |
April
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.
Is May a good time to visit Maine?
Looking for great weather? May is a good time to be in Maine. The temperatures are nice, and there’s not too much rain.
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.
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.
Daily Temperature in May in Maine
This chart shows the average daily high and low temperatures in May for Maine, in degrees Celsius. The red line represents the highs, and the blue line shows the lows. The days of the month are displayed at the bottom of the chart. The data, based on historical observations, provide the average temperatures for this month.
Daily Precipitation in May in Maine
The chart below shows the average daily precipitation in May for Maine, measured in millimeters over the past few years. Precipitation is always measured as water, even if it’s snow or hail. The days of the month are listed at the bottom of the chart.
A low average precipitation means that the chance of rain on that day is usually small, while a higher average suggests that it rained more often. But remember, it’s just an average, and every day can be different. Based on historical weather data for May, you can expect about 11 days of precipitation in Maine.
Daily Snowfall in May in Maine
This chart shows the average daily snowfall in May in Maine, measured in centimeters. The bottom of the chart shows the days of the month. The data is based on historical measurements and gives an idea of the average snowfall in May.
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.
Temperature in May in Maine over the years
This chart shows the average temperature in May in Maine, measured in degrees Celsius, over the past few years.
Total precipitation in May in Maine over the years
This chart shows the average precipitation in May in Maine, measured in millimeters over the past years. Precipitation is always measured as water, whether it’s snow or hail.
Snowfall in May in Maine per year
This chart shows the average snowfall in May in Maine, measured in centimeters, over the past few years.
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.
Weather experiences in May in Maine
Have you been to Maine in May?
Share your weather experience in May in Maine.
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.
