Hayward weather by month
Hayward, nestled in the East Bay of the San Francisco Bay Area, enjoys a Mediterranean climate characterized by mild, wet winters and warm, dry summers. But even within this generally pleasant pattern, the weather in Hayward varies significantly throughout the year. This guide provides a detailed look at Hayward’s weather by month, helping you plan your visits or simply understand what to expect.
Overview of Hayward’s Climate
Hayward benefits from its proximity to the San Francisco Bay, which moderates temperatures. This means less extreme heat in the summer and milder cold snaps in the winter compared to inland areas. Fog is a common occurrence, particularly during the summer months, often rolling in during the late afternoon and evening. Microclimates exist within Hayward, with areas closer to the hills experiencing slightly warmer temperatures and less fog.
Hayward Weather by Month
Here’s a breakdown of what you can expect each month:
| Month | Avg High (°F) | Avg Low (°F) | Rainfall (inches) | Sunshine Hours | Humidity (%) |
|---|---|---|---|---|---|
| January | 57 | 44 | 2.8 | 140 | 78 |
| February | 61 | 46 | 2.4 | 160 | 75 |
| March | 65 | 48 | 2.0 | 200 | 72 |
| April | 68 | 50 | 0.9 | 240 | 68 |
| May | 72 | 54 | 0.4 | 280 | 65 |
| June | 76 | 58 | 0.1 | 300 | 62 |
| July | 80 | 61 | 0.0 | 310 | 60 |
| August | 81 | 62 | 0.0 | 300 | 61 |
| September | 78 | 60 | 0.2 | 270 | 64 |
| October | 73 | 56 | 1.1 | 230 | 68 |
| November | 64 | 48 | 1.8 | 170 | 72 |
| December | 57 | 44 | 2.5 | 150 | 76 |
Spring: March – May
Spring in Hayward is a beautiful time of year. Temperatures gradually rise, wildflowers bloom, and the hills turn green.
- March: Transition month. Expect some rain, but increasingly sunny days. Average high is 65°F.
- April: Pleasant and mild. Rainfall decreases significantly. Ideal for outdoor activities. Average high is 68°F.
- May: Warm and sunny. Fog is less frequent. Average high reaches 72°F. Perfect for hiking and exploring the regional parks.
Summer: June – August
Summers in Hayward are warm and dry. While not excessively hot, temperatures can reach the low 80s. The marine layer (fog) often rolls in during the late afternoon and evening, providing a welcome respite from the heat.
- June: Warm days and cool nights. The start of the dry season. Average high is 76°F.
- July: The warmest month of the year. Expect plenty of sunshine. Average high is 80°F.
- August: Similar to July, with warm temperatures and occasional fog. Average high is 81°F.
Autumn: September – November
Autumn brings a return to milder temperatures and increased rainfall. The hills display vibrant fall colors.
- September: Warm days and cooler evenings. A popular time for outdoor events. Average high is 78°F.
- October: Pleasant temperatures and increasing rainfall. The fog returns more frequently. Average high is 73°F.
- November: Cool and wet. The rainy season begins in earnest. Average high is 64°F.
Winter: December – February
Winters in Hayward are mild and wet. Temperatures rarely drop below freezing. Rainfall is common, but heavy snow is extremely rare.
- December: Cool and wet. Expect frequent rain showers. Average high is 57°F.
- January: The wettest month of the year. Temperatures are cool but rarely cold. Average high is 57°F.
- February: Similar to January, with continued rainfall. Average high is 61°F.
Frequently Asked Questions (FAQ)
Q: What is the rainiest month in Hayward?
A: January is typically the rainiest month in Hayward.
Q: Does Hayward get a lot of fog?
A: Yes, Hayward frequently experiences fog, especially during the summer months.
Q: What is the average temperature in Hayward during the summer?
A: The average high temperature in Hayward during the summer (June-August) is around 78-81°F.
Q: Is Hayward colder than other parts of the Bay Area?
A: Generally, no. Hayward’s location is moderated by the bay, making it milder than inland areas.
Q: What should I pack if I’m visiting Hayward in the winter?
A: Pack layers, including a waterproof jacket, umbrella, and comfortable walking shoes.
Resources
- National Weather Service – San Francisco Bay Area: https://www.weather.gov/bayarea/
- Hayward Area Recreation and Park District: https://www.haywardrec.org/ (For park information and event schedules)
- AccuWeather – Hayward, CA: https://www.accuweather.com/en/us/hayward/94541/daily-weather-forecast/348305
- City of Hayward Official Website: https://www.haywardca.gov/
- Visit Tri-Valley: https://www.visittrivalley.com/ (Nearby attractions and events)
