Our verdict
The best time to visit San Jose is May
In the summer months, temperatures can reach as high as 32℃ (90℉) in San Jose. In the colder months such as December, temperatures usually get down to an average minimum of 6℃ (43℉).
The sun stays up the longest in San Jose in July, so you’ll get the most out of your daytime activities if you visit around this time. On average it rains the most days in March, making it the wettest month of the year. Although it’s the wet season, it can often rain a little bit during the day or evening but have fine weather for a majority of the day too, so don’t let this put you off.
Continue reading to find out more about when to visit San Jose, including the climate, seasonal info, what to pack, FAQs, and the best tools to help you plan and book your next vacation.
Quick links: Fast facts / Seasons / Average temperatures / Monthly climate / FAQs / Map
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San Jose seasons
Before you continue, it’s important to know when the seasons are in San Jose as they might be different to yours depending on where in the world you’re travelling from. San Jose is in the Northern Hemisphere, so the seasons fall during these months:
| Season | Months |
|---|---|
| Summer | June to August |
| Autumn/fall | September to November |
| Winter | December to February |
| Spring | March to May |
Average temperatures in San Jose
If the temperature is a big factor for you to help you decide when to visit, the chart below shows the average minimum and maximum temperatures in San Jose for each month side-by-side so you can easily see the difference in weather throughout the year. To see the temperatures in both Celsius (°C) and Fahrenheit (°F), hover or tap the shaded boxes on the graph.
San Jose climate by month
If you already have a rough idea about which months you might want to travel, the section below shows a detailed breakdown of the climate in San Jose for each month so you can see if it all suits your wants and needs. Scroll down, or use the quick menu below to jump to your preferred month.
Jump to:
San Jose in January
- Average temperature: 10℃ (50℉)
- Average high temperature: 15℃ (58℉)
- Average low temperature: 6℃ (43℉)
- Average humidity: 72%
- Average sunny days: 23 days
- Average rainfall: 16mm (1") over 6 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to San Jose in January, make sure you pack a warm jacket or coat.
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San Jose in February
- Average temperature: 10℃ (51℉)
- Average high temperature: 16℃ (60℉)
- Average low temperature: 6℃ (43℉)
- Average humidity: 71%
- Average sunny days: 21 days
- Average rainfall: 17mm (1") over 6 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to San Jose in February, make sure you pack a warm jacket or coat.
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San Jose in March
- Average temperature: 11℃ (52℉)
- Average high temperature: 17℃ (62℉)
- Average low temperature: 7℃ (44℉)
- Average humidity: 73%
- Average sunny days: 20 days
- Average rainfall: 21mm (1") over 10 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to San Jose in March, make sure you pack a warm jacket or coat.
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San Jose in April
- Average temperature: 13℃ (56℉)
- Average high temperature: 19℃ (67℉)
- Average low temperature: 8℃ (46℉)
- Average humidity: 69%
- Average sunny days: 23 days
- Average rainfall: 7mm (0") over 7 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to San Jose in April, make sure you pack a warm jacket or coat.
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San Jose in May
- Average temperature: 15℃ (60℉)
- Average high temperature: 22℃ (71℉)
- Average low temperature: 9℃ (49℉)
- Average humidity: 66%
- Average sunny days: 26 days
- Average rainfall: 5mm (0") over 3 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to San Jose in May, make sure you pack a coat or jumper for the evenings and some light clothes for the daytime.
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San Jose in June
- Average temperature: 18℃ (64℉)
- Average high temperature: 25℃ (77℉)
- Average low temperature: 11℃ (52℉)
- Average humidity: 62%
- Average sunny days: 28 days
- Average rainfall: 1mm (0") over 1 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to San Jose in June, make sure you pack a coat or jumper for the evenings, and t-shirts and light gear for the daytime.
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San Jose in July
- Average temperature: 20℃ (67℉)
- Average high temperature: 28℃ (82℉)
- Average low temperature: 13℃ (55℉)
- Average humidity: 61%
- Average sunny days: 28 days
- Average rainfall: 1mm (0") over 1 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to San Jose in July, make sure you pack t-shirts for the daytime and maybe a light jumper for the evenings as it cools down a bit.
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San Jose in August
- Average temperature: 19℃ (67℉)
- Average high temperature: 27℃ (81℉)
- Average low temperature: 13℃ (56℉)
- Average humidity: 63%
- Average sunny days: 30 days
- Average rainfall: 1mm (0") over 0 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to San Jose in August, make sure you pack t-shirts for the daytime and maybe a light jumper for the evenings as it cools down a bit.
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San Jose in September
- Average temperature: 19℃ (66℉)
- Average high temperature: 26℃ (80℉)
- Average low temperature: 13℃ (56℉)
- Average humidity: 60%
- Average sunny days: 27 days
- Average rainfall: 2mm (0") over 2 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to San Jose in September, make sure you pack t-shirts for the daytime and maybe a light jumper for the evenings as it cools down a bit.
San Jose in October
- Average temperature: 17℃ (62℉)
- Average high temperature: 23℃ (73℉)
- Average low temperature: 12℃ (53℉)
- Average humidity: 62%
- Average sunny days: 27 days
- Average rainfall: 4mm (0") over 2 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to San Jose in October, make sure you pack a coat or jumper for the evenings and some light clothes for the daytime.
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San Jose in November
- Average temperature: 13℃ (55℉)
- Average high temperature: 18℃ (64℉)
- Average low temperature: 9℃ (47℉)
- Average humidity: 66%
- Average sunny days: 24 days
- Average rainfall: 10mm (0") over 4 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to San Jose in November, make sure you pack a warm jacket or coat.
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San Jose in December
- Average temperature: 10℃ (49℉)
- Average high temperature: 14℃ (56℉)
- Average low temperature: 6℃ (43℉)
- Average humidity: 71%
- Average sunny days: 22 days
- Average rainfall: 18mm (1") over 8 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to San Jose in December, make sure you pack a warm jacket or coat.
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