Climate Chart of Sendai, Japan

Monthly data: Temperature °C, Rain (mm), Sunshine (h) · 2013–2023

Climate overview

Temperature

The coolest monthly mean is 0.7 °C in January, while the warmest is 24.5 °C in August. These are monthly averages rather than daytime maximum temperatures, so they describe the broad temperature character of each month, not the range a visitor may experience from day to day. Across the calendar-month means, the unweighted mean is 12.3 °C. It is a compact summary of those monthly averages, not a day-weighted annual average.

Rain

Mean daily rainfall reaches its monthly high of 6.26 mm/day in July and its low of 1.11 mm/day in January. These figures are daily averages for their respective months, not monthly rainfall totals; neither one indicates how often rain occurs or whether a particular day will be wet. The unweighted mean across monthly mean daily rainfall figures is 3.61 mm/day. Use it as a broad summary rather than a forecast of daily conditions.

Snow

The highest monthly mean daily snowfall is 6.43 mm/day in January. This daily-average amount does not establish how many days have snow, snow depth, snow cover, or whether conditions suit skiing. The unweighted mean across monthly snowfall averages is 1.53 mm/day per day, a broad summary rather than a measure of snow on any individual date.

Sunshine

Mean daily sunshine is highest in May, at 9.41 hours/day, and lowest in December, at 6.58 hours/day. These are averages of sunshine duration, not measures of day length, and actual conditions can vary. The unweighted mean of the monthly sunshine averages is 7.84 hours/day per day, offering a year-wide reference without implying the same amount of sunshine each day.

Best Travel Time Guide for Sendai, Japan: Ideal Seasons and Weather Insights

Visitors prioritising lower average rainfall could consider January, when mean daily rainfall is 1.11 mm/day; this is a criterion-based option, not a guarantee of dry days or a measure of rain frequency. For visits in July, when the mean daily figure is 6.26 mm/day, include rain-ready clothing or a flexible indoor alternative in your plans. For cooler monthly mean temperatures, January is the relevant option, with a mean of 0.7 °C. That average is not a daytime high or a description of every day, so check conditions close to travel and pack for variability.

For outdoor sightseeing guided by average sunshine duration, May records 9.41 hours/day per day, while December records 6.58 hours/day. Sunshine duration is not day length and cannot promise clear weather; these figures can help frame daylight-outdoor planning, but they do not identify a universal best time to visit. The snowfall average peaks in January at 6.43 mm/day per day, but it does not show the number of snowy days or establish snow depth, cover, or skiing conditions. Treat it as limited context when packing, rather than evidence that snow will be present during a particular visit.

Climate Data Overview for Sendai, Japan

Explore the comprehensive climate data for Sendai, Japan. This detailed table provides valuable insights into temperature variations, precipitation levels, and seasonal changes, helping you understand the unique weather patterns of this region.

• See also climate change in Sendai
• Explore the climate in Japan