April weather forecast
Hayward, CA

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The landscape of the famed Verdant Hills in Hayward, California
The landscape of the famed Verdant Hills in Hayward, California

Weather in April

April sees drastic changes in weather conditions in Hayward. Temperatures continue their upward trend, while rainfall takes a nosedive, and the number of rainy days reduces by half. The humidity sees a reduction and the city gets more daylight, indicating that summer is on the horizon. In April, Hayward's average rainfall drops to 0.63" (16mm), underscoring the onset of the dry phase. As cloud coverage decreases, wind speeds follow a similar pattern, reflecting distinctly calmer conditions compared to the preceding months.

Temperature

April commences with an average high-temperature of a still comfortable 66.2°F (19°C), showing little deviation from March's 61.9°F (16.6°C). April brings Hayward a consistent average low-temperature of 46.4°F (8°C).

Humidity

In April, the average relative humidity is 70%.

Rainfall

In Hayward, in April, it is raining for 7 days, with typically 0.63" (16mm) of accumulated precipitation. In Hayward, California, during the entire year, the rain falls for 69.2 days and collects up to 11.1" (282mm) of precipitation.

Daylight

In April, the average length of the day is 13h and 12min.
On the first day of the month, sunrise is at 6:52 am and sunset at 7:31 pm. On the last day of April, sunrise is at 6:12 am and sunset at 7:58 pm PDT.

Sunshine

The average sunshine in April is 10.5h.

UV index

The average daily maximum UV index in April is 5. A UV Index reading of 3 to 5 represents a medium health hazard from unsafe exposure to UV radiation for the average person.
Note: The daily high UV index of 5 during April translates into the following recommendations:
Take measures. Individuals with light skin might experience burns in under 30 minutes. The Sun is at its harshest during midday; protect yourself by staying in shaded areas and minimizing exposure. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense.
Updated: Jun 27, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the usual temperature for Hayward in April?

During April, Hayward experiences an average high-temperature of 66.2°F (19°C) and a low-temperature of 46.4°F (8°C).

What is the average humidity in April?

In Hayward, the average relative humidity in April is 70%.

How much does it rain in April?

In Hayward, during April, the rain falls for 7 days and regularly aggregates up to 0.63" (16mm) of precipitation.

How many hours of daylight does Hayward have in April?

In April, the average day length is 13h and 12min.

What time are sunrise and sunset in April?

On the first day of April, sunrise is at 6:52 am and sunset at 7:31 pm. On the last day of the month, sunrise is at 6:12 am and sunset at 7:58 pm PDT.

How long on average sun shines in April?

The average sunshine duration in April is 10.5h.

What is the UV index reading in April?

The average daily maximum UV index in April is 5. A UV Index estimate of 3 to 5 represents a medium hazard to health from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in April
Hayward, CA

Average temperature in April - Hayward, CA
  • Average high temperature in April: 66.2°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 April: 46.4°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 April
Hayward, CA

Average pressure in April - Hayward, CA
  • Average pressure in April: 30.03"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 April
Hayward, CA

Average wind speed in April - Hayward, CA
  • Average wind speed in April: 6.3mph

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 April
Hayward, CA

Average humidity in April - Hayward, CA
  • Average humidity in April: 70%

The month with the highest relative humidity is March (74%).
The month with the lowest relative humidity is September (61%).

Average rainfall in April
Hayward, CA

Average rainfall in April - Hayward, CA
  • Average rainfall in April: 0.63"

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 April
Hayward, CA

Average rainfall days in April - Hayward, CA
  • Average rainfall days in April: 7 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 April /
Average sunshine in April
Hayward, CA

Average daylight in April / Average sunshine in April - Hayward, CA
  • Average daylight in April: 13h 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 April: 10h and 3min

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 April
Hayward, CA

Average sunshine days in April - Hayward, CA
  • Average sunshine days in April: 22.1 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 April
Hayward, CA

Average UV index in April - Hayward, CA
  • Average UV index in April: 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 April
Hayward, CA

Average cloud cover in April - Hayward, CA
  • Average cloud cover in April: 26

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 April
Hayward, CA

Average visibility in April - Hayward, CA
  • Average visibility in April: 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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