Monthly climate guide
Saitama weather in December
Expect cool weather in Saitama in December: afternoons reach about 10°C (49°F), while nights drop to around 0°C (31°F). Around 42 mm of rain falls over the month (fairly dry), and skies are a mix of sun and cloud. Daytime highs are 6°C cooler than November and 3°C warmer than January.
What stands out in December
- Mornings start cold: the average low is 0°C, and frost is common.
- Skies are at their clearest this time of year.
- Only 2 months are cooler in Saitama than December.
- Rain is well below Saitama's usual level (around 65% less).
It's usually the driest month of the year.
Avg high
10°C
49°F
Avg low
0°C
31°F
Rainfall
42 mm
fairly dry
Humidity
77%
relative
Sky
48%
cloud · a mix of sun and cloud
Saitama weather by month
Show the monthly averages as a table
| Month | Avg high | Avg low | Rain | Humidity | Cloud cover |
|---|---|---|---|---|---|
| January | 7°C / 44°F | -3°C / 27°F | 43 mm | 75% | 43% |
| February | 8°C / 46°F | -2°C / 28°F | 48 mm | 75% | 57% |
| March | 12°C / 54°F | 1°C / 33°F | 87 mm | 74% | 59% |
| April | 18°C / 64°F | 5°C / 42°F | 109 mm | 74% | 64% |
| May | 24°C / 74°F | 12°C / 53°F | 119 mm | 74% | 66% |
| June | 26°C / 78°F | 16°C / 61°F | 176 mm | 80% | 82% |
| July | 30°C / 86°F | 21°C / 69°F | 181 mm | 81% | 77% |
| August | 31°C / 88°F | 22°C / 71°F | 150 mm | 80% | 66% |
| September | 27°C / 80°F | 18°C / 64°F | 221 mm | 82% | 73% |
| October | 21°C / 70°F | 11°C / 52°F | 184 mm | 81% | 68% |
| November | 16°C / 60°F | 5°C / 41°F | 69 mm | 80% | 56% |
| December | 10°C / 49°F | 0°C / 31°F | 42 mm | 77% | 48% |
What to pack for December
- A proper insulated winter coat
- A hat, scarf and gloves
- Thermal base layers and warm, grippy boots for icy mornings
- A small travel umbrella, just in case
Is December a good time to visit Saitama?
Compare the months in the chart above to find your ideal window.
Best time to visit Saitama →Other Japan cities in December
Cite or embed this data
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Saitama weather in December. WeatherCompare, 2026 (NASA POWER / ERA5, 2011–2020 monthly averages). https://weathercompare.eu/weather/japan/saitama/december
<a href="https://weathercompare.eu/weather/japan/saitama/december">Saitama weather in December</a> (WeatherCompare)
<iframe src="https://weathercompare.eu/embed/japan/saitama" width="300" height="160" style="border:0;border-radius:12px" loading="lazy" title="Saitama weather in December"></iframe> <p style="font-size:12px"><a href="https://weathercompare.eu/weather/japan/saitama/december">Saitama weather in December</a> – WeatherCompare</p>
Saitama in December: quick answers
Is December a good time to visit Saitama?
December is cool in Saitama, with highs around 10°C. Better for museums and city walks than the beach, and usually quieter.
How warm is Saitama in December?
Average highs are about 10°C (49°F) and average lows about 0°C (31°F), based on 10 years of daily data.
Does it rain a lot in Saitama in December?
Saitama typically gets around 42 mm of rain in December — fairly dry. It's usually the driest month of the year.
Figures are long-term averages for the area around Saitama (NASA POWER / ERA5, 2011–2020), not a forecast for a specific year. For upcoming days, see the live multi-source forecast.