May weather forecast
Gilroy, CA

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A colorful sunset sky over the hilly region of Gilroy in California
A colorful sunset sky over the hilly region of Gilroy in California

Weather in May

The last month of the spring, May, is another pleasant month in Gilroy, California, with an average temperature fluctuating between 46°F (7.8°C) and 72.5°F (22.5°C).

Temperature

As May takes hold, the average high-temperature is a still pleasant 72.5°F (22.5°C), nearly mirroring that of the previous month. Despite a significant disparity with daytime temperatures, an average low-temperature of 46°F (7.8°C) is recorded during May.

Humidity

In Gilroy, the average relative humidity in May is 66%.

Rainfall

May is the last month it rains in Gilroy, California. During 2.4 rainfall days, in May, Gilroy aggregates 0.12" (3mm) of precipitation. Throughout the year, in Gilroy, California, there are 43.4 rainfall days, and 3.66" (93mm) of precipitation is accumulated.

Daylight

In Gilroy, the average length of the day in May is 14h and 10min.
On the first day of May, sunrise is at 6:10 am and sunset at 7:55 pm. On the last day of the month, sunrise is at 5:48 am and sunset at 8:20 pm PDT.

Sunshine

In Gilroy, California, the average sunshine in May is 11.1h.

UV index

The average daily maximum UV index in May in Gilroy is 5. A UV Index value of 3 to 5 symbolizes a moderate threat to health from unprotected exposure to Sun's UV rays for the average person.
Note: An average UV index of 5 in May transforms into this advice:
Be cautious. Those with fair skin can be subjected to burns in fewer than 30 minutes. To guard against the harmful effects of the Sun, minimize exposure during midday. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized.
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Frequently asked questions

What are the temperatures in Gilroy in May?

Gilroy in May has an average high-temperature of 72.5°F (22.5°C) and an average low-temperature of 46°F (7.8°C).

What is the average humidity in May in Gilroy?

In May, the average relative humidity is 66%.

What is the last month it rains in Gilroy?

May is the last month it rains. During 2.4 rainfall days, in May, Gilroy aggregates 0.12" (3mm) of precipitation.

How many hours of daylight does Gilroy have in May?

In Gilroy, the average day length in May is 14h and 10min.

When are sunrise and sunset in May in Gilroy?

On the first day of May in Gilroy, sunrise is at 6:10 am and sunset at 7:55 pm. On the last day of the month, sunrise is at 5:48 am and sunset at 8:20 pm PDT.

How long on average sun shines in May in Gilroy?

In Gilroy, the average sunshine duration in May is 11.1h.

What is the UV index intensity in May in Gilroy?

The average daily maximum UV index in May is 5. A UV Index value of 3 to 5 symbolizes a medium hazard to health from exposure to the Sun's UV radiation.
Average humidity
Average rainfall
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in May
Gilroy, CA

Average temperature in May - Gilroy, CA
  • Average high temperature in May: 72.5°F

The warmest month (with the highest average high temperature) is August (85.1°F).
The month with the lowest average high temperature is December (57.6°F).

  • Average low temperature in May: 46°F

The months with the highest average low temperature are August and September (54.1°F).
The coldest months (with the lowest average low temperature) are February and March (40.6°F).

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Average pressure in May
Gilroy, CA

Average pressure in May - Gilroy, 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).

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Average wind speed in May
Gilroy, CA

Average wind speed in May - Gilroy, CA
  • Average wind speed in May: 5.3mph

The windiest month (with the highest average wind speed) is May (5.3mph).
The calmest month (with the lowest average wind speed) is November (3.9mph).

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Average humidity in May
Gilroy, CA

Average humidity in May - Gilroy, CA
  • Average humidity in May: 66%

The month with the highest relative humidity is March (74%).
The month with the lowest relative humidity is September (57%).

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Average rainfall in May
Gilroy, CA

Average rainfall in May - Gilroy, CA
  • Average rainfall in May: 0.12"

The wettest month (with the highest rainfall) is December (0.83").
The driest months (with the least rainfall) are June, July and August (0").

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Average rainfall days in May
Gilroy, CA

Average rainfall days in May - Gilroy, CA
  • Average rainfall days in May: 2.4 days

The month with the highest number of rainy days is March (8.3 days).
The month with the least rainy days is August (0.6 days).

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Average daylight in May /
Average sunshine in May
Gilroy, CA

Average daylight in May / Average sunshine in May - Gilroy, 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 42min).

  • Average sunshine in May: 11h and 1min

The month with the most sunshine is July (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 6h and 0min).

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Average sunshine days in May
Gilroy, CA

Average sunshine days in May - Gilroy, CA
  • Average sunshine days in May: 27.7 days

The month with the most sunshine days is July (29.9 days).
The month with the least sunshine days is March (21.4 days).

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Average UV index in May
Gilroy, CA

Average UV index in May - Gilroy, CA
  • Average UV index in May: 5

The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 3).

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Average cloud cover in May
Gilroy, CA

Average cloud cover in May - Gilroy, CA
  • Average cloud cover in May: 22

The month with the most cloud cover is March (Cloud cover 35).
The month with the least cloud cover is July (Cloud cover 7).

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Average visibility in May
Gilroy, CA

Average visibility in May - Gilroy, 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).

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Gilroy, California, USA

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