Temperatures in May
It's hot in May in Fullerton with an average temperature of 30°C. Temperatures this month range from a low of 28°C to a high of 32°C. At night, you can expect temperatures between 15°C and 22°C.
Max and Min Temperatures per Day
This chart shows the daily maximum and minimum temperatures in degrees Celsius for Fullerton in May. The red line indicates the max temperatures, and the blue line shows the minimums.
Start of May
The month of May starts in Fullerton with hot temperatures, averaging around 30°C during the day and nights close to 18°C. You can expect regular precipitation, but there’s also a chance for some sunny days in the first days of the month.
Since temperatures can differ between day and night, it’s a good idea to dress in layers.
Mid-May
By mid-May, the average daytime temperature rises to around 31°C, with nights close to 21°C. During this part of the month, you can expect regular precipitation, but there’ll also be some sunny days.
End of May
By the end of May, the average daytime temperature in Fullerton will be around 31°C, with nights close to 21°C. There’s regular precipitation, but with a bit of luck, you’ll also get some dry and sunny days.
Discover cheap trips to Fullerton 
Precipitation in May
In May, there is an average of 190 mm of precipitation, spread over 9 days. The wind speed is around 3 Bft, mostly coming from the Southeast.
The average precipitation chance is 29% per day this month. Though it seems pretty low, the weather’s variable. Some days have higher and others lower precipitation chances, which lowers the average.
Precipitation Chance
This chart shows the daily precipitation chance (in percentages) in May for Fullerton. 0% means it never rained on that day in the past 10 years, and 100% means it rained every day. All values in between represent the average chance of precipitation on that day.
Fullerton in May |
London | ||
|---|---|---|---|
 Average Temperature |
30°C | 18°C | |
 High Temp |
32°C | 21°C | |
| Low Temp |
28°C | 15°C | |
 Total Precipitation |
190 mm | 46 mm | |
| Rainy Days |
9 days | 8 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 Fullerton?
After some sun? Then May isn’t the best time to be in Fullerton. The temperature is pleasant, but there’s too much chance of rain this month.
The hurricane season in Fullerton runs from June to November.
Temperature records for Fullerton in May
With 35°C, Fullerton hit the highest temperature in the last 10 years in May 2018. The lowest daytime temperature in this month was 18°C in 2014. The extreme night temperatures ranged from a low of 7°C to a high of 26°C.
Check out the climate of Fullerton for all months and discover the best travel time
Plan your next holiday
Don’t miss the best holiday deals for Fullerton and see what our partners have for you.
Daily Temperature in May in Fullerton
This chart shows the average daily temperatures, both day and night, for each day in May in Fullerton, measured in degrees Celsius. The red line represents the maximum temperatures, while the blue line shows the minimums. The days of the month are displayed at the bottom of the chart. The data, based on historical observations, gives an overview of the average daily temperatures during this month.
Daily Precipitation in May in Fullerton
The chart below shows the average daily precipitation in May for Fullerton, measured in millimetres over the past years. Precipitation is always measured as water, even if it’s snow or hail. The days of the month are shown 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 rain is more likely. But it’s still an average, so each day can be different. Based on historical weather data for May, you can expect around 9 days of rain in Fullerton.
Daily UV Index in May in Fullerton
This chart shows the average daily UV index in May in Fullerton, 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 Fullerton Over the Years
This chart shows the average temperature in May in Fullerton, measured in degrees Celsius, over the past years.
Total Precipitation in May in Fullerton Over the Years
This chart shows the average precipitation in May in Fullerton, measured in millimetres over the past years. Precipitation is always measured as water, even if it’s snow or hail.
Daily climate in May for Fullerton
Click on a specific day in May for detailed info on the typical weather on that day in Fullerton. Check out the historical temperatures and precipitation over the past 10 years on this day.
Weather experiences in May in Fullerton
Have you been to Fullerton in May?
Share your weather experience in May in Fullerton.
Average Weather in Fullerton by Month
Click on a month below to see detailed weather info for Fullerton. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.
Or check out the climate of Fullerton for all months at once
