Climate · Onomichi

Onomichi in September

Warm and damp, as the days shorten.

Typical weather, averaged over 30 years

September in Onomichi is warm: highs near 84°F, lows near 71°F. Rain falls on about three days a week, less often as the month goes on, and the days shorten by 46 minutes from the first week to the last.September in Onomichi is warm: highs near 29°C, lows near 22°C. Rain falls on about three days a week, less often as the month goes on, and the days shorten by 46 minutes from the first week to the last.

High
84°F29°Caverage
Low
71°F22°Caverage
Wet days
3a week · 39% of days
Daylight
12h 19mon average

Is September a good time to visit Onomichi?


A good month, just outside Onomichi's best months, which run in two parts: May to June, or October.

How we judge it: every month is scored on how close its typical high comes to the range from 70°F to 80°F, how mild its nights are, and how rarely it rains. The best months are the run of months that scores best.How we judge it: every month is scored on how close its typical high comes to the range from 21°C to 27°C, how mild its nights are, and how rarely it rains. The best months are the run of months that scores best.

How September sits in the year

week by week

Temperature

Highs near 84°F in September, against 51°F to 89°F through the year.Highs near 29°C in September, against 11°C to 32°C through the year.

Chance of a wet day

39% of days in September, against 29% to 46% through the year.

Cloud cover

53% cover in September, against 38% to 68% through the year.

Daylight

12h 19m in September, against 9h 54m to 14h 24m through the year.

Week by week, lightly smoothed, with September shaded. The olive line marks the best months. Hover or tap a week for its figures.

Either side


  1. August89°32°low 77°low 25°2 wet days a weekRain on about two days a week.
  2. September84°29°low 71°low 22°3 wet days a weekRain on about three days a week.
  3. October75°24°low 63°low 17°2 wet days a weekRain on about two days a week.

Where Onomichi sits, in September

Asia/Tokyo

this place
typical high in September 40°F4°C95°F35°C
Sunrise, mid-September
5:50 AMsets 6:16 PM
Above the sea
0 mlow-lying
Latitude
34.3°Nnorthern hemisphere
Nearest of ours
Naoshima85 km east

The land around Onomichi, shaded by its typical high in September, the planning map's own layer. Hover the map for the figure at that spot; tap it on a phone. Clock times are local, for the 15th.

Elsewhere in Japan in September

high · low · wet days

Typical weather, averaged over 30 years (1995–2024), read 8 km west of Onomichi. Its own grid square is mostly sea and holds only a daily average, so the page reads the nearest square with a true high and low near the town's height. Temperatures are adjusted against 66 weather stations: daytime highs read about 3.1°F cold in the source data and are raised to match.Temperatures are adjusted against 66 weather stations: daytime highs read about 1.7°C cold in the source data and are raised to match. Daylight is calculated from latitude. Charts are lightly smoothed week to week; the figures in the table are not. Source: Copernicus ERA5-Land reanalysis; cloud cover from NASA's MERRA-2 reanalysis, on a coarser grid of about 50 km. Contains modified Copernicus Climate Change Service information 2026; neither the European Commission nor ECMWF is responsible for any use of it. These are averages, not a forecast.

Daylight is calculated from latitude. Charts are lightly smoothed week to week; the figures in the table are not.

Source: Copernicus ERA5-Land reanalysis; cloud cover from NASA's MERRA-2 reanalysis, on a coarser grid of about 50 km. Contains modified Copernicus Climate Change Service information 2026; neither the European Commission nor ECMWF is responsible for any use of it. These are averages, not a forecast.