Pacifica Climate by Month
Pacifica, California, United States
Mild all year, with most rain from December to March.
The climate in Pacifica is mild all year, with most rain from December to March. September is the warmest month, with highs around 70°F (21°C); January is the coolest at 58°F (14°C), and nights dip to 44°F (7°C). Of the 31 in (783 mm) of rain in a typical year, 71% falls from December to March. June to September are almost completely dry.
- Warmest month
- 70°F(21°C)
- Average high, September
- Coldest nights
- 44°F(7°C)
- Average low, January
- Rain per year
- 31 in(783 mm)
- Wettest: December
- Humidity
- 76%
- Sunniest: June
Best and worst months in Pacifica
Best for weatherThe most comfortable weather comes in August and September, with highs around 69°F (21°C) and almost no rain.
Least pleasantDecember and January are the least pleasant; January is the coldest, with highs of only 58°F (14°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)
Pacifica weather by month
| Month | High | Low | Rain | Humidity | Sun |
|---|---|---|---|---|---|
| JanJanuary | 58°F(14°C) | 44°F(7°C) | 6.0 in(152 mm) | 79% | 1.9 |
| FebFebruary | 60°F(15°C) | 45°F(7°C) | 5.6 in(142 mm) | 75% | 2.7 |
| MarMarch | 61°F(16°C) | 45°F(7°C) | 4.3 in(108 mm) | 72% | 4.1 |
| AprApril | 63°F(17°C) | 46°F(8°C) | 2.3 in(59 mm) | 76% | 5.4 |
| MayMay | 64°F(18°C) | 48°F(9°C) | 0.9 in(24 mm) | 78% | 6.1 |
| JunJune | 66°F(19°C) | 50°F(10°C) | 0.3 in(7 mm) | 78% | 7.0 |
| JulJuly | 68°F(20°C) | 51°F(11°C) | 0.1 in(3 mm) | 81% | 6.8 |
| AugAugustBest | 68°F(20°C) | 53°F(12°C) | 0.1 in(2 mm) | 77% | 6.2 |
| SepSeptemberBest | 70°F(21°C) | 53°F(11°C) | 0.2 in(4 mm) | 76% | 5.2 |
| OctOctober | 69°F(20°C) | 50°F(10°C) | 1.7 in(43 mm) | 69% | 3.7 |
| NovNovember | 63°F(17°C) | 46°F(8°C) | 3.3 in(83 mm) | 75% | 2.5 |
| DecDecember | 58°F(15°C) | 44°F(7°C) | 6.1 in(156 mm) | 78% | 1.8 |
1991–2020 averages. Sun is solar radiation in kWh/m² per day. Highlighted: the most comfortable months.
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