Hayward Climate by Month
Hayward, California, United States
Warm summers and mild winters, with most rain from December to March.
The climate in Hayward is one of warm summers and mild winters, with most rain from December to March. Afternoon highs range from 59°F (15°C) in January to 82°F (28°C) in September, and December nights average 42°F (6°C). It gets 18 in (447 mm) of rain a year, 71% of it from December to March. June to September are almost completely dry.
- Warmest month
- 82°F(28°C)
- Average high, September
- Coldest nights
- 42°F(6°C)
- Average low, December
- Rain per year
- 18 in(447 mm)
- Wettest: January
- Humidity
- 64%
- Sunniest: June
Best and worst months in Hayward
Best for weatherMay, June and October are the best time for weather in Hayward: highs near 76°F (25°C) and almost no rain.
Least pleasantDecember and January are the least pleasant; January is the coldest, with highs of only 59°F (15°C).
Comfort combines how close the afternoon high is to 75°F (24°C) with how much rain falls and how humid it is. See where the weather is best in May.
Temperature and rain through the year
Highs and lows (°F)
Average highAverage low
Rain (in per month)
Hayward weather by month
| Month | High | Low | Rain | Humidity | Sun |
|---|---|---|---|---|---|
| JanJanuary | 59°F(15°C) | 43°F(6°C) | 3.5 in(90 mm) | 71% | 1.9 |
| FebFebruary | 63°F(17°C) | 44°F(7°C) | 3.3 in(84 mm) | 72% | 2.6 |
| MarMarch | 66°F(19°C) | 46°F(8°C) | 2.5 in(63 mm) | 65% | 4.2 |
| AprApril | 70°F(21°C) | 48°F(9°C) | 1.3 in(34 mm) | 65% | 5.5 |
| MayMayBest | 74°F(23°C) | 51°F(11°C) | 0.6 in(14 mm) | 62% | 6.3 |
| JunJuneBest | 78°F(26°C) | 55°F(13°C) | 0.2 in(4 mm) | 58% | 7.3 |
| JulJuly | 81°F(27°C) | 56°F(14°C) | 0.0 in(1 mm) | 59% | 7.2 |
| AugAugust | 81°F(27°C) | 56°F(14°C) | 0.0 in(1 mm) | 58% | 6.5 |
| SepSeptember | 82°F(28°C) | 55°F(13°C) | 0.1 in(2 mm) | 59% | 5.4 |
| OctOctoberBest | 77°F(25°C) | 52°F(11°C) | 1.0 in(26 mm) | 58% | 3.8 |
| NovNovember | 67°F(20°C) | 46°F(8°C) | 1.9 in(48 mm) | 64% | 2.5 |
| DecDecember | 60°F(16°C) | 42°F(6°C) | 3.1 in(80 mm) | 71% | 1.8 |
1991–2020 averages. Sun is solar radiation in kWh/m² per day. Highlighted: the most comfortable months.
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