July weather forecastRedwood City, CA

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

July

Weather in July

July, the same as June, in Redwood City, California, is an agreeable summer month, with an average temperature fluctuating between 73°F (22.8°C) and 54.5°F (12.5°C).

Temperature

The warmest months are July and August, with an average high-temperature of 73°F (22.8°C).

Humidity

In July, the average relative humidity is 72%.

Rainfall

The months with the least rainfall are July and August Rain falls for 1.5 days and accumulates 0.04" (1mm) of rain.

Ocean temperature

In July, the average ocean temperature is 56.5°F (13.6°C).
Note: Swimming in 56.5°F (13.6°C) feels unbearing at 55.4°F (13°C) and can be life-risking below 50°F (10°C), causing breathing issues and cold shock, depending on a person's capacity.

Daylight

In Redwood City, the average length of the day in July is 14h and 27min.
On the first day of the month, sunrise is at 5:52 am and sunset at 8:34 pm. On the last day of July, sunrise is at 6:13 am and sunset at 8:17 pm PDT.

Sunshine

With an average of 12h of sunshine, July has the most sunshine of the year.

UV index

The months with the highest UV index in Redwood City are June through September, with an average maximum UV index of 5. A UV Index value of 3 to 5 symbolizes a medium vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: The maximum UV index of 5 during July leads to these instructions:
Undertake protective steps - Obligation to safeguard skin and eyes from harm is in place. Midday Sun has the strongest UV rays, making it crucial to limit exposure and find shade. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation.

Updated: Jun 7, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

During July and August, Redwood City experiences its average highest temperatures, peaking at 73°F (22.8°C).

In July, the average high-temperature and low-temperature are 73°F (22.8°C) and 54.5°F (12.5°C) respectively.

In Redwood City, the average relative humidity in July is 72%.

The months with the least rainfall are July and August Rain falls for 1.5 days and accumulates 0.04" (1mm) of rain.

In Redwood City, during July, the rain falls for 1.5 days and regularly aggregates up to 0.04" (1mm) of precipitation.

In July, the average ocean temperature is 56.5°F (13.6°C). At temperatures below 50°F (10°C), swimming in a suitably protected swimsuit is feasible; otherwise, cold shock and loss of breathing control are imminent. Even a short swim, without thermal protection, at temperatures around 55.4°F (13°C) is not comfortable.

In Redwood City, the average day length in July is 14h and 27min.

In July, on the first day of the month, sunrise is at 5:52 am and sunset at 8:34 pm. On the last day of the month, sunrise is at 6:13 am and sunset at 8:17 pm PDT.

With an average of 12h of sunshine, July has the most sunshine of the year.

In Redwood City, the average sunshine duration in July is 12h.

June through September, with an average maximum UV index of 5, are months with the highest UV index.

The average daily maximum UV index in July is 5. A UV Index of 3 to 5 symbolizes a moderate health threat from unprotected exposure to UV radiation.

Today

Tomorrow

Long-term

Year J F M A M J July A S O N D

Jun

July

Aug

Average high temperature

70.3°F

73°F

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

7.3mph

6.2mph

6.1mph

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

1.8

1.5

0.8

Average sea temperature

Average daylight

Average sunshine

Average sunshine days

26.3

27.5

27.6

Average UV index

Average cloud cover

14%

10%

Average visibility

6mi

Average temperature in July
Redwood City, CA

Average high temperature in July: 73°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 July: 54.5°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).

Average pressure in July
Redwood City, CA

Average pressure in July: 29.93"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).

Average wind speed in July
Redwood City, CA

Average wind speed in July: 5.7mph

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).

Average humidity in July
Redwood City, CA

Average humidity in July: 72%

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

Average rainfall in July
Redwood City, CA

Average rainfall in July: 0.04"

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

Average rainfall days in July
Redwood City, CA

Average rainfall days in July: 1.5 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).

Average sea temperature in July
Redwood City, CA

Average sea temperature in July: 56.4°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).

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

Average daylight in July: 14h and 24min

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 July: 12h and 0min

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).

Average sunshine days in July
Redwood City, CA

Average sunshine days in July: 27.5 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).

Average UV index in July
Redwood City, CA

Average UV index in July: 5

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).

Average cloud cover in July
Redwood City, CA

Average cloud cover in July: 9

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

Average visibility in July
Redwood City, CA

Average visibility in July: 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).