Climate Chart of Osaka, Japan

Climate overview

Temperature

Monthly mean temperatures reach their high in August, at 28.1 °C, and their low in January, at 4.6 °C. These are monthly averages rather than daytime highs or nightly lows, so they provide a broad guide to the temperature pattern, not a daily forecast. The unweighted mean across the calendar-month means is 15.8 °C; it is not a day-weighted annual average and does not describe the temperatures visitors will encounter on any particular trip.

Rain

Mean daily rainfall is highest in July, at 7.38 mm/day, and lowest in January, at 1.88 mm/day. The lower monthly mean can help visitors prioritising less average rainfall identify a possible time to travel, but it does not promise dry days or indicate how often rain occurs. Across the calendar-month means, the unweighted mean daily rainfall is 4.59 mm/day. These figures are daily averages, not monthly rainfall totals, so they should not be read as the amount expected on each day.

Sunshine

Mean daily sunshine reaches its highest level in August, at 10.11 hours/day, and its lowest in December, at 7.04 hours/day. Visitors planning outdoor sightseeing around brighter average conditions may find these comparisons useful, while remembering that sunshine duration does not measure day length or guarantee clear skies. The unweighted mean of the calendar-month sunshine means is 8.31 hours/day per day; this is a broad reference rather than a promise of the sunshine on a particular visit.

Snow

Mean daily snowfall is highest in February, at 0.78 mm/day, while the unweighted mean across calendar-month means is 0.10 mm/day. These small daily-average figures do not establish how many days have snow, how deep it becomes, whether snow cover forms, or whether skiing conditions are available.