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
The transition into May in Hayward is marked with an average high-temperature of a pleasant 70.3°F (21.3°C), showing an insignificant shift from April's 66.2°F (19°C). May's nights observe an average temperature of 49.1°F (9.5°C).Humidity
The average relative humidity in May in Hayward is 67%.Rainfall
In Hayward, in May, it is raining for 4.3 days, with typically 0.51" (13mm) of accumulated precipitation. Throughout the year, in Hayward, there are 69.2 rainfall days, and 11.1" (282mm) of precipitation is accumulated.Daylight
The average length of the day in May is 14h and 13min.On the first day of May, sunrise is at 6:11 am and sunset at 7:59 pm. On the last day of the month, sunrise is at 5:48 am and sunset at 8:23 pm PDT.
Sunshine
The average sunshine in May in Hayward is 10.9h.UV index
In May, the average daily maximum UV index in Hayward is 5. A UV Index value of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV radiation for the average person.Note: The maximum daily UV index of 5 in May converts into the following recommendations:
Heed the precautions - Protecting the skin and eyes from damage is compulsory. Around midday, solar radiation is most harmful; hence, exposure should be limited. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses.
Frequently asked questions
What is the temperature in May in Hayward?
What is the average humidity in May in Hayward?
How much does it rain in Hayward in May?
How many hours of daylight does Hayward have in May?
What time are sunrise and sunset in May in Hayward?
How long on average sun shines in May in Hayward?
What is the UV index intensity in May in Hayward?
Average temperature in May
Hayward, CA
- Average high temperature in May: 70.3°F
The warmest month (with the highest average high temperature) is July (80.2°F).
The month with the lowest average high temperature is December (55.9°F).
- Average low temperature in May: 49.1°F
The month with the highest average low temperature is August (56.5°F).
The coldest months (with the lowest average low temperature) are January and December (43.7°F).
Average pressure in May
Hayward, CA
- Average pressure in May: 29.98"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The months with the lowest atmospheric pressure are June, August and September (29.92"Hg).
Average wind speed in May
Hayward, CA
- Average wind speed in May: 6.6mph
The windiest month (with the highest average wind speed) is May (6.6mph).
The calmest month (with the lowest average wind speed) is November (4.6mph).
Average humidity in May
Hayward, CA
- Average humidity in May: 67%
The month with the highest relative humidity is March (74%).
The month with the lowest relative humidity is September (61%).
Average rainfall in May
Hayward, CA
- Average rainfall in May: 0.51"
The wettest month (with the highest rainfall) is February (2.28").
The driest months (with the least rainfall) are July and August (0.04").
Average rainfall days in May
Hayward, CA
- Average rainfall days in May: 4.3 days
The month with the highest number of rainy days is March (12.4 days).
The month with the least rainy days is August (0.9 days).
Average daylight in May /
Average sunshine in May
Hayward, CA
- Average daylight in May: 14h and 1min
The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 36min).
- Average sunshine in May: 10h and 5min
The month with the most sunshine is July (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 5h and 54min).
Average sunshine days in May
Hayward, CA
- Average sunshine days in May: 26 days
The month with the most sunshine days is August (28.9 days).
The month with the least sunshine days is March (17.3 days).
Average UV index in May
Hayward, CA
- Average UV index in May: 5
The month with the highest UV index is June (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 3).
Average cloud cover in May
Hayward, CA
- Average cloud cover in May: 22
The months with the most cloud cover are March and December (Cloud cover 34).
The month with the least cloud cover is July (Cloud cover 7).
Average visibility in May
Hayward, 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).
Hayward, California, USA
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