Contents
- Weather in May
- Frequently asked questions
- Average temperature in May
- Average pressure in May
- Average wind speed in May
- Average humidity in May
- Average rainfall in May
- Average rainfall days in May
- Average daylight in May
- Average sunshine in May
- Average sunshine days in May
- Average UV index in May
- Average cloud cover in May
- Average visibility in May
Weather in May
Temperature
Pasadena experiences an average high-temperature of a warm 73.9°F (23.3°C) in May, subtly different from April's 71.2°F (21.8°C). An average low-temperature of 54.1°F (12.3°C) marks the nights throughout May.Humidity
In May, the average relative humidity is 57%.Rainfall
In Pasadena, during May, the rain falls for 3.7 days and regularly aggregates up to 0.2" (5mm) of precipitation. Throughout the year, there are 50.1 rainfall days, and 8.5" (216mm) of precipitation is accumulated.Daylight
In May, the average length of the day is 13h and 58min.On the first day of the month, sunrise is at 6:02 am and sunset at 7:37 pm. On the last day of May, in Pasadena, sunrise is at 5:41 am and sunset at 7:58 pm PDT.
Sunshine
In May, the average sunshine is 11.8h.UV index
In Pasadena, the average daily maximum UV index in May is 5. A UV Index of 3 to 5 symbolizes a medium vulnerability from unprotected exposure to Sun's UV rays for the ordinary person.Note: A typical high UV index of 5 in May suggests the following recommendations:
Prioritize safety - The need to safeguard skin and eyes from harm is emphasized. Direct exposure to the Sun's intense radiation around midday should be avoided for health reasons. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in May?
What is the average humidity in May?
How much does it rain in May?
How many hours of daylight does Pasadena have in May?
What time are sunrise and sunset in May?
How many hours of sunshine does Pasadena have in May?
What is the UV index reading in May?
Average temperature in May
Pasadena, CA
- Average high temperature in May: 73.9°F
The warmest month (with the highest average high temperature) is August (87.1°F).
The month with the lowest average high temperature is December (61.7°F).
- Average low temperature in May: 54.1°F
The month with the highest average low temperature is August (64.9°F).
The coldest month (with the lowest average low temperature) is February (46.6°F).
Average pressure in May
Pasadena, CA
- Average pressure in May: 29.92"Hg
The month with the highest atmospheric pressure is January (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).
Average wind speed in May
Pasadena, CA
- Average wind speed in May: 5.6mph
The windiest month (with the highest average wind speed) is April (5.8mph).
The calmest month (with the lowest average wind speed) is September (4.4mph).
Average humidity in May
Pasadena, CA
- Average humidity in May: 57%
The month with the highest relative humidity is June (58%).
The month with the lowest relative humidity is November (47%).
Average rainfall in May
Pasadena, CA
- Average rainfall in May: 0.2"
The wettest month (with the highest rainfall) is February (1.77").
The driest month (with the least rainfall) is June (0.04").
Average rainfall days in May
Pasadena, CA
- Average rainfall days in May: 3.7 days
The month with the highest number of rainy days is March (7.8 days).
The month with the least rainy days is June (1.1 days).
Average daylight in May /
Average sunshine in May
Pasadena, CA
- Average daylight in May: 14h and 0min
The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 9h and 54min).
- Average sunshine in May: 11h and 5min
The months with the most sunshine are June and July (Average sunshine: 12h and 6min).
The months with the least sunshine are January, February and December (Average sunshine: 6h and 54min).
Average sunshine days in May
Pasadena, CA
- Average sunshine days in May: 25.3 days
The month with the most sunshine days is June (27.5 days).
The month with the least sunshine days is February (21.5 days).
Average UV index in May
Pasadena, CA
- Average UV index in May: 5
The months with the highest UV index are June, July, August and September (UV index 6).
The month with the lowest UV index is December (UV index 3).
Average cloud cover in May
Pasadena, CA
- Average cloud cover in May: 12
The months with the most cloud cover are March and December (Cloud cover 21).
The month with the least cloud cover is August (Cloud cover 5).
Average visibility in May
Pasadena, CA
- Average visibility in May: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Pasadena, California, USA
Weather forecast for your location
2. Allow the app to use your location