Climate · Japan

Onomichi

Hot and damp from July to September; cool and damp from December to March.

Typical weather, averaged over 30 years34.3°N0 m above the sea
  1. Jan51°11°38°3°Rain on about three days a week.
  2. Feb51°11°38°3°Rain on about three days a week.
  3. Mar57°14°43°6°Rain on about three days a week.
  4. Apr66°19°50°10°Rain on about three days a week.
  5. May73°23°59°15°Rain on about two days a week.
  6. Jun79°26°67°19°Rain on about three days a week.
  7. Jul85°29°74°23°Rain on about three days a week.
  8. Aug89°32°77°25°Rain on about two days a week.
  9. Sep84°29°71°22°Rain on about three days a week.
  10. Oct75°24°63°17°Rain on about two days a week.
  11. Nov65°18°52°11°Rain on about two days a week.
  12. Dec55°13°42°6°Rain on about three days a week.
Each month: its typical high and low, and dots for wet days a week. Tap a month to open it.The best months

The warm season runs from July to September, with highs near 86°F and nights near 74°F. From December to March, highs are nearer 54°F. The rain comes from June to July, on about three days a week. October to November is the driest stretch, with rain on about two days a week. Daylight runs from about 10 hours in December to 14½ hours in June.The warm season runs from July to September, with highs near 30°C and nights near 23°C. From December to March, highs are nearer 12°C. The rain comes from June to July, on about three days a week. October to November is the driest stretch, with rain on about two days a week. Daylight runs from about 10 hours in December to 14½ hours in June.

Where Onomichi sits

Asia/Tokyo

this place
typical high in Januarytypical high in Februarytypical high in Marchtypical high in Apriltypical high in Maytypical high in Junetypical high in Julytypical high in Augusttypical high in Septembertypical high in Octobertypical high in Novembertypical high in December 40°F4°C95°F35°C
Latitude
34.3°Nnorthern hemisphere
Above the sea
0 mlow-lying
Sunrise, mid-JanuarySunrise, mid-FebruarySunrise, mid-MarchSunrise, mid-AprilSunrise, mid-MaySunrise, mid-JuneSunrise, mid-JulySunrise, mid-AugustSunrise, mid-SeptemberSunrise, mid-OctoberSunrise, mid-NovemberSunrise, mid-December
7:13 AM6:54 AM6:20 AM5:38 AM5:06 AM4:55 AM5:06 AM5:28 AM5:50 AM6:12 AM6:40 AM7:06 AMsets 5:19 PMsets 5:50 PMsets 6:15 PMsets 6:38 PMsets 7:01 PMsets 7:21 PMsets 7:21 PMsets 6:57 PMsets 6:16 PMsets 5:35 PMsets 5:05 PMsets 4:59 PM
Nearest of ours
Naoshima85 km east

The land around Onomichi, shaded by its typical high in January, the planning map's own layer.The land around Onomichi, shaded by its typical high in February, the planning map's own layer.The land around Onomichi, shaded by its typical high in March, the planning map's own layer.The land around Onomichi, shaded by its typical high in April, the planning map's own layer.The land around Onomichi, shaded by its typical high in May, the planning map's own layer.The land around Onomichi, shaded by its typical high in June, the planning map's own layer.The land around Onomichi, shaded by its typical high in July, the planning map's own layer.The land around Onomichi, shaded by its typical high in August, the planning map's own layer.The land around Onomichi, shaded by its typical high in September, the planning map's own layer.The land around Onomichi, shaded by its typical high in October, the planning map's own layer.The land around Onomichi, shaded by its typical high in November, the planning map's own layer.The land around Onomichi, shaded by its typical high in December, 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.

Through the year

week by week

Temperature

Highs from 51°F in January and February to 89°F in August.Highs from 11°C in January and February to 32°C in August.

Chance of a wet day

Wettest in July (46% of days), driest in November (29%).

Cloud cover

Clearest in November and December (38% cover), cloudiest in July (68%).

Daylight

From 9h 54m in December to 14h 24m in June.

Week by week, lightly smoothed. Shading marks the seasons; the olive line, the best months. Hover or tap a week for its figures.

Month by month

°F°C

Onomichi, month by month: the typical high and low, wet days a week, cloud cover and daylight.
MonthTypical low to highWet days a weekCloudDaylight
JanuaryCool season
38°3°51°11°
3 days42%10h 08m
FebruaryCool season
38°3°51°11°
3 days45%10h 54m
MarchCool season
43°6°57°14°
3 days49%11h 55m
April
50°10°66°19°
3 days52%13h 01m
MayAt its best
59°15°73°23°
2 days56%13h 56m
JuneAt its best
67°19°79°26°
3 days67%14h 24m
JulyWarm season
74°23°85°29°
3 days68%14h 11m
AugustWarm season
77°25°89°32°
2 days57%13h 23m
SeptemberWarm season
71°22°84°29°
3 days53%12h 19m
OctoberAt its best
63°17°75°24°
2 days41%11h 14m
November
52°11°65°18°
2 days38%10h 20m
DecemberCool season
42°6°55°13°
3 days38%9h 54m

When is the best time to visit Onomichi?


The best months are May to June, or October: highs near 76°F, nights near 63°F, and rain on about three days a week.The best months are May to June, or October: highs near 24°C, nights near 17°C, and rain on about three days a week.

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.

Questions


What is the warmest month in Onomichi?

August, with highs near 89°F and lows near 77°F. The coolest are January and February, with highs near 51°F.August, with highs near 32°C and lows near 25°C. The coolest are January and February, with highs near 11°C.

When does it rain most in Onomichi?

July, with rain on about three days a week. November is the driest, with rain on about two days a week.

How long are the days in Onomichi?

From about 10 hours in December to 14½ hours in June.

When are the skies clearest in Onomichi?

November and December, when cloud covers about 38% of the sky on average. July is the cloudiest, at about 68%.

Places with a year like Onomichi's

by their highs, lows and wet days

Their highs, lows, wet days and cloud run closest to Onomichi's through the year, one place a country. “Six months apart”: their winter is Onomichi's summer.

Elsewhere in Japan

All of Japan

Where to stay

2 in our collection

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.