May weather forecast
Redwood City, CA

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The intricate design of the organized Redwood City in California, with a scenic view of the harbor and the rest of the city
The intricate design of the organized Redwood City in California, with a scenic view of the harbor and the rest of the city

Weather in May

The last month of the spring, May, is another refreshing month in Redwood City, California, with an average temperature fluctuating between 50.2°F (10.1°C) and 65.3°F (18.5°C).

Temperature

The average high-temperature in May, at a still refreshing 65.3°F (18.5°C), reveals a modest deviation from April's 62.8°F (17.1°C). Redwood City, in the month of May, anticipates a consistent average low-temperature of 50.2°F (10.1°C).

Humidity

In May, the average relative humidity in Redwood City is 73%.

Rainfall

In Redwood City, in May, it is raining for 5.3 days, with typically 0.59" (15mm) of accumulated precipitation. Throughout the year, there are 73.4 rainfall days, and 11.89" (302mm) of precipitation is accumulated.

Ocean temperature

In Redwood City, in May, the average water temperature is 54°F (12.2°C).
Note: Navigating the 54°F (12.2°C) at 55.4°F (13°C) is no joy, and temperatures less than 50°F (10°C) can threaten breathing and cause a chilling shock, gauging personal stamina.

Daylight

In Redwood City, the average length of the day in May is 14h and 13min.
On the first day of the month, sunrise is at 6:12 am and sunset at 7:59 pm. On the last day of May, in Redwood City, sunrise is at 5:49 am and sunset at 8:24 pm PDT.

Sunshine

In May, the average sunshine is 10.7h.

UV index

The average daily maximum UV index in May in Redwood City is 4. A UV Index of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV radiation for the ordinary person.
Note: In May, the maximum UV index of 4 suggests this advice:
Heed the precautions - It is counselled to guard against solar damage. The midday Sun can be dangerous due to its intense radiation; always find shade and reduce exposure. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.
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Frequently asked questions

What is the temperature in May in Redwood City?

In May, the average high-temperature and low-temperature in Redwood City, California, are 65.3°F (18.5°C) and 50.2°F (10.1°C) respectively.

What is the average humidity in May in Redwood City?

The average relative humidity in May in Redwood City is 73%.

How many days does it rain in May in Redwood City?

In Redwood City, during May, the rain falls for 5.3 days and regularly aggregates up to 0.59" (15mm) of precipitation.

What is the water temperature in May in Redwood City?

In May, the average ocean temperature is 54°F (12.2°C). Swimming in 54°F (12.2°C) is considered dangerous. Unprotected immersion in temperatures below 50°F (10°C) causes quickly maximum intensity cold shock with hyperventilation.

How many hours of daylight does Redwood City have in May?

In May, the average day length is 14h and 13min.

When is the sunrise / sunset in May in Redwood City?

In May, on the first day of the month, sunrise is at 6:12 am and sunset at 7:59 pm. On the last day of the month, in Redwood City, sunrise is at 5:49 am and sunset at 8:24 pm PDT.

How many hours of sunshine does Redwood City have in May?

The average sunshine duration in May is 10.7h.

What is the UV index intensity in May in Redwood City?

In Redwood City, the average daily maximum UV index in May is 4. A UV Index value of 3 to 5 symbolizes a medium health risk from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in May
Redwood City, CA

Average temperature in May - Redwood City, CA
  • Average high temperature in May: 65.3°F

The warmest months (with the highest average high temperature) are July and August (73°F).
The month with the lowest average high temperature is December (55.9°F).

  • Average low temperature in May: 50.2°F

The month with the highest average low temperature is September (56.7°F).
The coldest month (with the lowest average low temperature) is February (46°F).

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Average pressure in May
Redwood City, CA

Average pressure in May - Redwood City, CA
  • Average pressure in May: 29.98"Hg

The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is September (29.92"Hg).

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Average wind speed in May
Redwood City, CA

Average wind speed in May - Redwood City, CA
  • Average wind speed in May: 7.3mph

The windiest month (with the highest average wind speed) is April (7.5mph).
The calmest months (with the lowest average wind speed) are August, September and October (5.5mph).

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Average humidity in May
Redwood City, CA

Average humidity in May - Redwood City, CA
  • Average humidity in May: 73%

The month with the highest relative humidity is March (75%).
The month with the lowest relative humidity is October (68%).

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Average rainfall in May
Redwood City, CA

Average rainfall in May - Redwood City, CA
  • Average rainfall in May: 0.59"

The wettest month (with the highest rainfall) is February (2.36").
The driest months (with the least rainfall) are July and August (0.04").

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Average rainfall days in May
Redwood City, CA

Average rainfall days in May - Redwood City, CA
  • Average rainfall days in May: 5.3 days

The month with the highest number of rainy days is March (12.8 days).
The month with the least rainy days is August (0.8 days).

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Average sea temperature in May
Redwood City, CA

Average sea temperature in May - Redwood City, CA
  • Average sea temperature in May: 53.9°F

The best months for swimming (with the highest average sea temperature) are August and September (57.7°F).
The coldest month (with the lowest average sea temperature) is April (53.4°F).

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Average daylight in May /
Average sunshine in May
Redwood City, CA

Average daylight in May / Average sunshine in May - Redwood City, 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 4min

The month with the most sunshine is July (Average sunshine: 12h and 0min).
The month with the least sunshine is December (Average sunshine: 5h and 48min).

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Average sunshine days in May
Redwood City, CA

Average sunshine days in May - Redwood City, CA
  • Average sunshine days in May: 23.2 days

The month with the most sunshine days is August (27.6 days).
The month with the least sunshine days is March (17.5 days).

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Average UV index in May
Redwood City, CA

Average UV index in May - Redwood City, CA
  • Average UV index in May: 4

The months with the highest UV index are June, July, August and September (UV index 5).
The months with the lowest UV index are November and December (UV index 3).

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Average cloud cover in May
Redwood City, CA

Average cloud cover in May - Redwood City, CA
  • Average cloud cover in May: 25

The month with the most cloud cover is March (Cloud cover 35).
The month with the least cloud cover is July (Cloud cover 9).

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Average visibility in May
Redwood City, CA

Average visibility in May - Redwood City, 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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Redwood City, California, USA

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