Weather in Onomichi

14-day forecast · updated today, Thursday, October 29, at 12:11 pm (GMT+9)

Now · partly cloudy 67 °F

Feels like: 67 °F
Low / high: 47 / 69 °F
Rain: 55% · 0.02 in
Wind: 4 mph S

↘ 30.23 inHg · falling

Today in Onomichi: light drizzle, 47 °F to 69 °F, with a 55% chance of rain (0.02 in) and a light breeze from the south (4 mph). Tomorrow, light rain, 56 °F to 67 °F and a 100% chance of rain. The warmest day of the week is Saturday 31, at 71 °F.

Temperatures for the next 14 days

69° 47°
Today
67° 56°
Fri 30
71° 49°
Sat 31
63° 46°
Sun 1
69° 54°
Mon 2
68° 49°
Tue 3
60° 52°
Wed 4
71° 55°
Thu 5
66° 49°
Fri 6
60° 49°
Sat 7
66° 50°
Sun 8
60° 45°
Mon 9
62° 44°
Tue 10
63° 43°
Wed 11

Day by day

Day	Sky	Low / high	Rain	Max wind	Max wave	High tides	Model
Today · 29	Light drizzle	47 / 69 °F	55% · 0.02 in	6 mph NNE	0.5 ft	12:48 pm	ECMWF
Fri 30	Light rain	56 / 67 °F	100% · 0.60 in	8 mph W	1.0 ft	12:09 am · 1:39 pm	ECMWF
Sat 31	Overcast	49 / 71 °F	0%	12 mph WNW	1.0 ft	12:51 am · 2:37 pm	ECMWF
Sun 1	Overcast	46 / 63 °F	4%	3 mph NNW	0.3 ft	1:45 am · 3:44 pm	ECMWF
Mon 2	Drizzle	54 / 69 °F	82% · 0.20 in	14 mph NW	1.1 ft	3:03 am · 5:03 pm	ECMWF
Tue 3	Overcast	49 / 68 °F	2%	7 mph NW	0.3 ft	4:56 am · 6:20 pm	ECMWF
Wed 4	Light drizzle	52 / 60 °F	11% · 0.01 in	6 mph NNE	0.6 ft	6:39 am · 7:22 pm	ECMWF
Thu 5	Light drizzle	55 / 71 °F	25% · 0.02 in	6 mph WNW	0.5 ft	7:51 am · 8:10 pm	ECMWF
Fri 6	Clear sky	49 / 66 °F	14%	11 mph NW	0.9 ft	8:44 am · 8:49 pm	ECMWF
Sat 7	Overcast	49 / 60 °F	9%	7 mph N	1.8 ft	9:29 am · 9:22 pm	ECMWF
Sun 8	Overcast	50 / 66 °F	7%	10 mph NW	1.6 ft	10:09 am · 9:51 pm	ECMWF
Mon 9	Mainly clear	45 / 60 °F	12%	7 mph NNW	1.0 ft	10:47 am · 10:19 pm	ECMWF
Tue 10	Clear sky	44 / 62 °F	14%	9 mph WNW	1.3 ft	11:23 am · 10:46 pm	ECMWF
Wed 11	Overcast	43 / 63 °F	8%	7 mph W	1.0 ft	11:58 am · 11:15 pm	ECMWF

Each day comes from the best model covering this spot: regional ones first (HRRR and NBM in the U.S., AROME, ICON-EU), then ECMWF; day 16, NOAA GFS. Waves: Météo-France up to day 10, then ECMWF WAM, coarser and further offshore. High tides: our own tide calculation.

Today, every 3 hours

Time	12:00 am	3:00 am	6:00 am	9:00 am	12:00 pm	3:00 pm	6:00 pm	9:00 pm
Sky	Clear	Clear	Clear	Mainly clear	Mainly clear	Overcast	Overcast	Overcast
Temperature	48°	48°	48°	59°	67°	69°	62°	58°
Chance of rain	0%	0%	0%	0%	0%	0%	0%	10%
Rain	0.00 in	0.00 in	0.00 in	0.00 in	0.00 in	0.00 in	0.00 in	0.00 in
Wind (mph)	2 NNW	3 NNW	4 N	4 ENE	4 SSE	6 SW	3 ENE	4 N
Humidity	90%	89%	91%	76%	61%	60%	80%	86%
UV	0	0	0	2	4	1	0	0
Model	ECMWF	ECMWF	ECMWF	ECMWF	ECMWF	ECMWF	ECMWF	ECMWF

Do the models agree?

Medium confidence

They broadly agree, but not quite on rain today: take it with some caution.

What 4 forecast models say for the next few days. The closer they are, the more reliable the forecast.

HighRainWind

Do the models agree? · High
High (°F)	Today	Fri 30	Sat 31	Sun 1	Mon 2	Tue 3	Wed 4
ECMWF	69°	67°	71°	63°	69°	68°	60°
AIFS	69°	68°	73°	68°	67°	70°	64°
GFS	64°	66°	70°	65°	69°	66°	67°
ICON	65°	69°	67°	66°	69°	67°	63°
Confidence	high	high	high	high	high	high	medium

Do the models agree? · Rain
Rain	Today	Fri 30	Sat 31	Sun 1	Mon 2	Tue 3	Wed 4
ECMWF	0.02 in	0.60 in	0	0	0.20 in	0	0.01 in
AIFS	0.07 in	0.64 in	0	0	0.26 in	0	0.04 in
GFS	0	0.76 in	0	0	0.35 in	0	0
ICON	0.00 in	0.38 in	0	0	0.11 in	0	0
Confidence	medium	high	high	high	medium	high	medium

Do the models agree? · Wind
Wind (mph)	Today	Fri 30	Sat 31	Sun 1	Mon 2	Tue 3	Wed 4
ECMWF	615	821	1229	38	1430	721	616
AIFS	5	5	11	4	6	6	6
GFS	67	118	1419	74	2430	98	910
ICON	513	619	1123	49	414	611	817
Confidence	high	high	high	high	low	high	high

Chance of rain from the ensemble models

Model	Today	Fri 30	Sat 31	Sun 1	Mon 2	Tue 3	Wed 4
ECMWF (51 scenarios)	55%	100%	0%	4%	82%	2%	11%
GFS (GEFS, 31 scenarios)	23%	94%	16%	0%	79%	3%	6%

Each model's day runs midnight to midnight local time; models that reach fewer days are left blank. Rain: daily total. Wind: the day's highest average wind and, in small type, the strongest gust. Highlighted: values that stand out from the rest. The chance of rain comes from many runs of the same model with slightly different starting data.

Outlook

How the coming weeks and months compare with what is normal for the time of year. It is a trend, not a day-by-day forecast.

Next few weeks, compared with normal: a bit warmer and normal rain.

Next 6 weeks

When	TemperatureTemp.	Rain	Typical high / low
Nov 2 – Nov 8Nov 2–Nov 8	Normal +0.2 °F	A bit below −34%	—
Nov 9 – Nov 15Nov 9–Nov 15	Normal +0.2 °F	Normal	—
Nov 16 – Nov 22Nov 16–Nov 22	A bit above +1.4 °F	Normal	61° / 51°
Nov 23 – Nov 29Nov 23–Nov 29	A bit above +2.3 °F	A bit above +29%	59° / 49°
Nov 30 – Dec 6Nov 30–Dec 6	A bit above +2.3 °F	Above +52%	57° / 47°

Coming months

When	TemperatureTemp.	Rain
November	A bit above +2.5 °F	Normal
December	A bit above +2.0 °F	Above +57%
January	A bit above +1.8 °F	A bit above +24%
February	Above +2.9 °F	A bit above +25%
March	A bit above +2.2 °F	Normal

Weeks: ECMWF 46-day (average of its scenarios), against the normal of the last 20 years for those dates. Months: ECMWF SEAS5. Rain: total against normal. The further ahead, the closer it gets to normal and the less detail it can give. The long-range sea temperature isn't usable at this spot (the model's grid cell falls on land).

Onomichi climate by monthClimate by month

Normal weather for each month (1991–2020 averages)

The best time to visit Onomichi is from September to October and in May: highs of 74 °F to 83 °F, about 9 rainy days a month and 6 hours of sunshine a day.

Typhoon season: from July to September, peaking in September. In the last 30 years (1996–2025), 32 tropical cyclones passed within 93 mi of Onomichi, one or two a year; 12 of them with hurricane-force winds (74 mph or more). The most recent: Peipah, in September 2025.

49° 34°

JanJ
51° 35°

FebF
57° 40°

MarM
66° 49°

AprA
75° 58°

MayM
80° 66°

JunJ
87° 74°

JulJ
91° 76°

AugA
83° 69°

SepS
74° 58°

OctO
63° 47°

NovN
53° 37°

DecD

Highs and lows
Monthly rainfall
Best time

Month	High	Low	Rain	Rainy daysDays	Sun (h/day)	Water	Waves	Cyclones
JanuaryJan	49°	34°	1.61 in	6	4.5	58°	1.3 ft	–
FebruaryFeb	51°	35°	1.94 in	7	4.7	55°	1.1 ft	–
MarchMar	57°	40°	3.34 in	9	5.3	56°	1.0 ft	–
AprilApr	66°	49°	4.43 in	9	5.9	59°	0.8 ft	–
MayMay	75°	58°	4.93 in	9	6.0	64°	0.5 ft	1
JuneJun	80°	66°	7.37 in	12	4.6	71°	0.5 ft	2
JulyJul	87°	74°	7.70 in	13	5.6	77°	0.5 ft	7
AugustAug	91°	76°	3.54 in	10	6.8	81°	0.6 ft	9
SeptemberSep	83°	69°	6.71 in	11	5.5	80°	0.8 ft	11
OctoberOct	74°	58°	5.01 in	8	5.2	74°	1.0 ft	2
NovemberNov	63°	47°	2.40 in	7	4.5	67°	1.0 ft	–
DecemberDec	53°	37°	1.68 in	7	4.1	62°	1.3 ft	–

Month	Water	Waves	Cyclones
Jan	58°	1.3 ft	–
Feb	55°	1.1 ft	–
Mar	56°	1.0 ft	–
Apr	59°	0.8 ft	–
May	64°	0.5 ft	1
Jun	71°	0.5 ft	2
Jul	77°	0.5 ft	7
Aug	81°	0.6 ft	9
Sep	80°	0.8 ft	11
Oct	74°	1.0 ft	2
Nov	67°	1.0 ft	–
Dec	62°	1.3 ft	–

Days: rainy days in the month. Sun: hours a day.

A normal year brings 50.66 in of rain on about 108 days and about 1,900 hours of sunshine.

Cyclones: how many tropical cyclones (tropical storms, hurricanes and typhoons) passed within 93 mi in each month from 1996 to 2025, according to IBTrACS (NOAA).

1991–2020 averages. Highs, lows and rainfall: TerraClimate; rainy days (0.04 in or more): NASA POWER (MERRA-2); sunshine hours: estimated from solar radiation; water: NOAA OISST; waves (average height): ERA5, 2011–2020. Normals are not a forecast: any given year can turn out very different. Sources and licenses

Temperature

Now67 °Ffeels like 67 °F

Tomorrow56 / 67 °F

It's 67 °F now (feels like 67 °F). Today, 47 °F to 69 °F; tomorrow, 56 °F to 67 °F.

Chance of rain

Today 55% 0.02 in
Fri 30 100% 0.60 in
Sat 31 0%
Sun 1 4%
Mon 2 82% 0.20 in
Tue 3 2%
Wed 4 11% 0.01 in

Today the chance of rain reaches 55%, with 0.02 in in total. The next day with likely rain is Friday 30: 100% and 0.60 in.

Recent rain: last 24 hours, 0.00 in; last 3 days, 0.06 in; last 7 days, 2.34 in.

Humidity and dew point

Humidity61%

Dew point53 °F

Humidity is 61% now and the dew point is 53 °F.

The dew point is the temperature at which the air becomes saturated: the higher it is, the heavier the air feels.

Visibility and fog

Now15 migood

Clouds55%

Visibility is good now (15 mi). No fog expected today.

The model gives visibility up to about 15 mi: beyond that, the horizon is clear.

UV index

Now4

Today's peak4moderate

Fri 30: 3 · Sat 31: 4 · Sun 1: 3

Index	Level	What to do
0–2	low	No special protection needed.
3–5	moderate	Hat, sunglasses and sunscreen around midday.
6–7	high	Sunscreen, hat and shade between 12 and 4 pm.
8–10	very high	Avoid the midday sun; reflection off the water adds to it.
11+	extreme	Avoid the sun between 11 am and 5 pm; protect yourself even if it is cloudy.

Reflection off water and sand adds radiation: protect yourself more on a boat or at the beach.

Barometric pressure

↗ Rising Anglers say fish bite less for a while
→ Steady Anglers expect normal activity
↘ Falling · now Anglers say fish feed more before the change

30.0030.20 29.94

Falling now (−0.05 inHg in 3 hours). Over the next 48 hours: −0.14 inHg. Falling pressure: anglers say fish feed more before the change. Fast changes, either way, tend to affect fishing.

Air and pollen

Air qualityFair · 33

Saharan dustNo

Previous days

The weather over the last 30 days, as the models analyzed it. Tap a day to see it hour by hour.

Day	Sky	Low / high	Rain	Max wind
Wed 28	Mainly clear	49 / 69 °F	0	7 mph NNW
Tue 27	Overcast	59 / 75 °F	0	14 mph NW
Mon 26	Rain	64 / 70 °F	1.59 in	10 mph NNE
Sun 25	Drizzle	69 / 73 °F	0.19 in	7 mph NNE
Sat 24	Rain	63 / 73 °F	0.39 in	7 mph NE
Fri 23	Heavy drizzle	55 / 71 °F	0.17 in	7 mph NE
Thu 22	Overcast	58 / 75 °F	0	8 mph N

Show all 30 days

Day	Sky	Low / high	Rain	Max wind
Wed 21	Drizzle	65 / 84 °F	0.14 in	16 mph W
Tue 20	Light drizzle	68 / 82 °F	0.05 in	8 mph SW
Mon 19	Heavy drizzle	66 / 81 °F	0.19 in	6 mph E
Sun 18	Overcast	57 / 79 °F	0	7 mph E
Sat 17	Overcast	58 / 77 °F	0	7 mph NE
Fri 16	Overcast	53 / 75 °F	0	5 mph NW
Thu 15	Overcast	53 / 74 °F	0	5 mph NNW
Wed 14	Light rain	59 / 75 °F	0.18 in	11 mph NW
Tue 13	Light rain	59 / 82 °F	0.14 in	9 mph WSW
Mon 12	Overcast	61 / 79 °F	0	5 mph NE
Sun 11	Overcast	63 / 80 °F	0	6 mph NE
Sat 10	Mainly clear	61 / 81 °F	0	5 mph NE
Fri 9	Clear sky	57 / 81 °F	0	4 mph NE
Thu 8	Clear sky	52 / 76 °F	0	5 mph NNE
Wed 7	Light drizzle	56 / 75 °F	0.04 in	6 mph N
Tue 6	Overcast	62 / 77 °F	0	9 mph N
Mon 5	Drizzle	62 / 72 °F	0.07 in	5 mph NNE
Sun 4	Heavy drizzle	62 / 67 °F	0.52 in	5 mph NNE
Sat 3	Overcast	60 / 76 °F	0	8 mph NE
Fri 2	Mainly clear	62 / 80 °F	0	9 mph N
Thu 1	Mainly clear	60 / 84 °F	0	9 mph NW
Wed 30	Clear sky	59 / 78 °F	0	4 mph NNE
Tue 29	Light rain	65 / 71 °F	0.74 in	6 mph NE

These are the models at the start of each day (ECMWF and GFS; waves from Météo-France), not readings from a weather station: there can be differences at specific spots.

Questions about the weather in OnomichiQuestions

What's the weather like today in Onomichi?

Light drizzle, from 47 °F to 69 °F, with a light breeze from the south (4 mph) and a 55% chance of rain.

Will it rain tomorrow in Onomichi?

On Friday 30 the chance of rain is 100% (0.60 in): light rain.

How warm will it be this week?

Between a low of 46 °F and a high of 71 °F; the warmest day, Saturday 31.

What's the UV index today?

It reaches 4 (moderate). Hat, sunglasses and sunscreen around midday.

Is the pressure rising or falling?

It's 30.23 inHg and falling: +0.05 inHg over the last 24 hours.

When is the best time to visit Onomichi?

The best time to visit Onomichi is from September to October and in May: highs of 74 °F to 83 °F, about 9 rainy days a month and 6 hours of sunshine a day.

What is the weather like in Onomichi in October?

In October, Onomichi normally sees highs of 74 °F and lows of 58 °F, with about 8 rainy days (5.01 in for the month) and 5 hours of sunshine a day. The sea is around 74 °F. These are 1991–2020 averages.

What are the warmest and wettest months in Onomichi?

The warmest is August, with average highs of 91 °F, and the coldest January, with lows of 34 °F. The wettest is July (7.70 in) and the driest, January.

When is typhoon season in Onomichi?

Typhoon season: from July to September, peaking in September. In the last 30 years (1996–2025), 32 tropical cyclones passed within 93 mi of Onomichi, one or two a year; 12 of them with hurricane-force winds (74 mph or more). The most recent: Peipah, in September 2025.

More about Onomichi today

Weather near Onomichi

Only places with a different forecast: spots a few miles apart share the same model cell and wouldn't add anything.

Learn more

Weather: Open-Meteo, CC BY 4.0, with the best model for each spot and lead time (NOAA HRRR and NBM in the U.S., Météo-France AROME, DWD ICON-EU, ECMWF IFS and NOAA GFS); ECMWF grid point 6.4 mi away. The comparison also uses ICON (DWD), AIFS (ECMWF) and ARPEGE (Météo-France). Outlook: ECMWF 46-day and SEAS5. Chance of rain from ensemble models (ECMWF, GEFS and NBM). UV, air quality and pollen: CAMS (Copernicus).

Forecast from Open-Meteo (CC BY 4.0) with models from ECMWF, NOAA, Météo-France, DWD, Copernicus Marine and CAMS. Updated at 12:11 pm (local time).

Spotted a mistake? Tell us · Where the weather and sea data come from