Seaside Climate by Month
Seaside, California, United States
Mild all year, with most rain from December to March.
The climate in Seaside is mild all year, with most rain from December to March. Expect highs of 71°F (22°C) in September and 60°F (16°C) in January, with the coldest nights (December) near 43°F (6°C). Of the 28 in (701 mm) of rain in a typical year, 72% falls from December to March. June to September are almost completely dry.
- Warmest month
- 71°F(22°C)
- Average high, September
- Coldest nights
- 43°F(6°C)
- Average low, December
- Rain per year
- 28 in(701 mm)
- Wettest: December
- Humidity
- 75%
- Sunniest: June
Best and worst months in Seaside
Best for weatherThe most comfortable weather comes in September, with highs around 71°F (22°C) and almost no rain.
Least pleasantDecember and January are the least pleasant; December is the coldest, with highs of only 60°F (16°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 September.
Temperature and rain through the year
Highs and lows (°F)
Average highAverage low
Rain (in per month)
Seaside weather by month
| Month | High | Low | Rain | Humidity | Sun |
|---|---|---|---|---|---|
| JanJanuary | 60°F(16°C) | 44°F(7°C) | 5.4 in(137 mm) | 75% | 2.2 |
| FebFebruary | 62°F(16°C) | 44°F(7°C) | 5.0 in(126 mm) | 73% | 2.9 |
| MarMarch | 63°F(17°C) | 46°F(8°C) | 3.9 in(98 mm) | 76% | 4.4 |
| AprApril | 65°F(18°C) | 47°F(8°C) | 2.2 in(56 mm) | 72% | 5.6 |
| MayMay | 66°F(19°C) | 49°F(9°C) | 0.5 in(13 mm) | 75% | 6.4 |
| JunJune | 68°F(20°C) | 51°F(11°C) | 0.2 in(5 mm) | 75% | 7.0 |
| JulJuly | 68°F(20°C) | 52°F(11°C) | 0.2 in(4 mm) | 79% | 6.7 |
| AugAugust | 69°F(21°C) | 53°F(12°C) | 0.1 in(2 mm) | 81% | 6.2 |
| SepSeptemberBest | 71°F(22°C) | 53°F(12°C) | 0.2 in(5 mm) | 74% | 5.3 |
| OctOctober | 69°F(21°C) | 50°F(10°C) | 1.3 in(33 mm) | 69% | 3.9 |
| NovNovember | 65°F(18°C) | 46°F(8°C) | 3.2 in(81 mm) | 73% | 2.8 |
| DecDecember | 60°F(16°C) | 43°F(6°C) | 5.6 in(141 mm) | 76% | 2.0 |
1991–2020 averages. Sun is solar radiation in kWh/m² per day. Highlighted: the most comfortable months.
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