San Leandro Weather in December
San Leandro in December averages 14°C (57°F) during the day and 5°C (41°F) at night. This is the wettest month of the year, and part of the winter season.
Rainfall in San Leandro in December
The month brings the most rain, so be prepared with an umbrella for the occasional shower. Looking at the last 30 years, the data shows about 14 days with rain, averaging 110 mm (4.3 in) for the month. The rain this month tends to fall in heavier spells rather than light drizzle. When it rains, showers can be significant.
Temperature in San Leandro in December
Expect highs of 14°C (57°F) in San Leandro in December, with nights dropping to around 5°C (41°F). December is a notable month of the winter season. Even when the weather is stable, mornings and evenings can still feel distinctly cool. Nights drop to 5°C (41°F). Cold nights like these are actually great for sleeping well, as long as you have a warm enough duvet. Experience the year's most moderate temperatures in December.
Sunshine in San Leandro in December
With about 160 hours of sunshine, the area enjoys a nice balance of sun and overcast, creating a pleasant environment.
Wind Speed in San Leandro in December
Wind speeds average 3 m/s (6 knots) during December. At this speed, light breezes keep leaves and small twigs in gentle motion while the wind also provides natural cooling. Since this is an average, some days are more tranquil while others have more persistent light winds that are more noticeable.
Average water temperature in December
The water temperature is 13°C (55°F) — chilly, but perfectly fine for a swim if you're not too sensitive to cold water. A short wetsuit can make longer sessions more comfortable.December in San Leandro has its charm. However, if you're seeking pleasant, dry and sunny weather, our weather planner can help you explore other destinations in the world.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit the United States of America, check out our San Leandro's climate page.
San Leandro Temperature in December
Min Temperature
5°C (41°F)
Max Temperature
14°C (57°F)
Water Temperature
13°C (55°F) *
Chance of Rain
48%
Precipitation
110 mm (4.3 in)
Rainy days
14 days
Humidity
78% *
Windspeed
3 m/s (6 knots) *
Sunshine
160 hours *
Percentage Sunshine
54% *
Best Places in the United States of America in December
Find out more about the weather in the United States of America and which places have the best travel conditions in this month. See all of the United States of America in December →
perfect weather
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What to Wear in San Leandro in December
The weather can be unpredictable in December, so pack clothes you can easily mix and match. You could bring jeans, other long pants, and a few t-shirts. A light jacket or light sweater will be pleasant for the cooler moments. High rain levels are expected, so pack waterproof gear and an umbrella or poncho. With water temperatures around 13°C (55°F), the water is quite cold for swimming. You can skip the swimwear unless you're particularly tough. Bring sunglasses since you'll have some sunny periods throughout the monthWhat To Do in San Leandro in December
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit the United States of America, check out our San Leandro's climate page.
Temperature Rainfall Sunshine Humidity Wind Speed Water Temp
See the full San Leandro climate overview or explore weather in the United States of America.
