Weather in Hamatonbetsu

14-day forecast · updated today, Thursday, October 29, at 3:07 pm (GMT+9)

Now · light snow 39 °F

Feels like: 33 °F
Low / high: 33 / 42 °F
Rain: 100% · 0.61 in
Wind: 7 mph SSE

→ 30.10 inHg · steady

Today in Hamatonbetsu: light snow, 33 °F to 42 °F, with a 100% chance of rain (0.61 in) and a light breeze from the south-southeast (7 mph). Tomorrow, drizzle, 41 °F to 58 °F and a 87% chance of rain. The warmest day of the week is Friday 30, at 58 °F.

Temperatures for the next 14 days

42° 33°
Today
58° 41°
Fri 30
56° 37°
Sat 31
38° 33°
Sun 1
45° 33°
Mon 2
40° 33°
Tue 3
38° 31°
Wed 4
49° 31°
Thu 5
49° 35°
Fri 6
35° 29°
Sat 7
33° 28°
Sun 8
33° 29°
Mon 9
35° 29°
Tue 10
33° 28°
Wed 11

Day by day

Day	Sky	Low / high	Rain	Max wind	Max wave	High tides	Model
Today · 29	Light snow	33 / 42 °F	100% · 0.61 in	13 mph WSW	5.8 ft	5:57 am · 3:07 pm	ECMWF
Fri 30	Drizzle	41 / 58 °F	87% · 0.22 in	14 mph SSW	3.5 ft	3:42 pm	ECMWF
Sat 31	Light drizzle	37 / 56 °F	75% · 0.11 in	14 mph WSW	3.4 ft	4:20 pm	ECMWF
Sun 1	Snow	33 / 38 °F	94% · 0.13 in	23 mph WNW	5.7 ft	5:04 pm	ECMWF
Mon 2	Light drizzle	33 / 45 °F	15% · 0.01 in	9 mph SW	2.9 ft	6:11 pm	ECMWF
Tue 3	Light snow	33 / 40 °F	61% · 0.06 in	16 mph W	3.3 ft	8:11 pm	ECMWF
Wed 4	Snow	31 / 38 °F	55% · 0.13 in	17 mph W	3.6 ft	12:10 pm · 10:12 pm	ECMWF
Thu 5	Light drizzle	31 / 49 °F	32% · 0.02 in	10 mph S	1.6 ft	12:10 pm	ECMWF
Fri 6	Drizzle	35 / 49 °F	71% · 0.29 in	17 mph NW	5.0 ft	12:19 am · 12:19 pm	ECMWF
Sat 7	Light snow	29 / 35 °F	61% · 0.12 in	17 mph WNW	5.7 ft	1:56 am · 12:37 pm	ECMWF
Sun 8	Light snow	28 / 33 °F	42% · 0.04 in	17 mph W	5.8 ft	2:56 am · 1:01 pm	ECMWF
Mon 9	Overcast	29 / 33 °F	32%	12 mph W	3.1 ft	3:43 am · 1:30 pm	ECMWF
Tue 10	Snow	29 / 35 °F	41% · 0.13 in	8 mph W	2.8 ft	4:25 am · 2:01 pm	ECMWF
Wed 11	Light snow	28 / 33 °F	35% · 0.09 in	9 mph W	3.0 ft	5:05 am · 2:34 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	Mainly clear	Mainly clear	Clear	Overcast	Overcast	Drizzle	Light snow	Heavy drizzle
Temperature	34°	33°	33°	40°	42°	39°	37°	40°
Chance of rain	10%	0%	4%	4%	18%	94%	100%	100%
Rain	0.00 in	0.00 in	0.00 in	0.00 in	0.00 in	0.02 in	0.14 in	0.04 in
Wind (mph)	12 W	12 W	11 W	12 W	12 W	7 SSE	6 SE	10 SSE
Humidity	67%	69%	67%	52%	61%	94%	99%	91%
UV	0	0	0	1	1	0	0	0
Model	ECMWF	ECMWF	ECMWF	ECMWF	ECMWF	ECMWF	ECMWF	ECMWF

Do the models agree?

Low confidence

They don't agree on rain tomorrow: it may change, so check again closer to the day.

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	42°	58°	56°	38°	45°	40°	38°
AIFS	45°	53°	51°	39°	42°	40°	42°
GFS	39°	48°	52°	39°	44°	40°	38°
ICON	45°	58°	56°	39°	43°	42°	42°
Confidence	medium	low	medium	high	high	high	high

Do the models agree? · Rain
Rain	Today	Fri 30	Sat 31	Sun 1	Mon 2	Tue 3	Wed 4
ECMWF	0.61 in	0.22 in	0.11 in	0.13 in	0.01 in	0.06 in	0.13 in
AIFS	0.43 in	0.26 in	0.17 in	0.08 in	0.06 in	0.10 in	0.06 in
GFS	1.44 in	0	0.08 in	0.12 in	0	0.17 in	0.47 in
ICON	0.57 in	0.01 in	0.05 in	0	0.02 in	0.02 in	0
Confidence	medium	low	high	medium	medium	medium	medium

Do the models agree? · Wind
Wind (mph)	Today	Fri 30	Sat 31	Sun 1	Mon 2	Tue 3	Wed 4
ECMWF	1324	1428	1428	2342	925	1628	1736
AIFS	17	12	21	29	6	12	19
GFS	1337	1037	2033	2440	617	1322	1425
ICON	1127	921	1132	1843	310	924	923
Confidence	high	high	medium	medium	high	high	medium

Chance of rain from the ensemble models

Model	Today	Fri 30	Sat 31	Sun 1	Mon 2	Tue 3	Wed 4
ECMWF (51 scenarios)	100%	87%	75%	94%	15%	61%	55%
GFS (GEFS, 31 scenarios)	100%	97%	87%	77%	68%	60%	65%

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 cooler, normal rain and a slightly cooler sea.

Next 6 weeks

When	TemperatureTemp.	Rain	Sea	Typical high / low
Nov 2 – Nov 8Nov 2–Nov 8	Below −5.0 °F	A bit above +36%	A bit below −1.6 °F	—
Nov 9 – Nov 15Nov 9–Nov 15	A bit below −2.2 °F	Normal	A bit below −1.1 °F	—
Nov 16 – Nov 22Nov 16–Nov 22	A bit below −1.1 °F	A bit above +25%	Normal −0.2 °F	39° / 35°
Nov 23 – Nov 29Nov 23–Nov 29	Normal 0.0 °F	A bit above +21%	Normal +0.4 °F	36° / 33°
Nov 30 – Dec 6Nov 30–Dec 6	Normal −0.2 °F	Normal	A bit above +0.9 °F	34° / 30°

Coming months

When	TemperatureTemp.	Rain	Sea
November	Above +2.9 °F	Normal	Above +2.9 °F
December	A bit above +2.3 °F	Normal	Above +2.5 °F
January	Above +2.7 °F	Normal	Above +2.3 °F
February	Above +2.7 °F	Normal	A bit above +1.4 °F
March	A bit above +1.4 °F	Normal	A bit above +1.3 °F

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.

Hamatonbetsu climate by monthClimate by month

Normal weather for each month (1991–2020 averages)

The best time to visit Hamatonbetsu is in August: highs of 73 °F, about 11 rainy days a month and 5 hours of sunshine a day.

Typhoon season: in September. In the last 30 years (1996–2025), 4 tropical cyclones passed within 93 mi of Hamatonbetsu, about one every 10 years; one of them with hurricane-force winds (74 mph or more). The most recent: Nabi, in September 2005.

24° 14°

JanJ
25° 12°

FebF
34° 22°

MarM
47° 34°

AprA
57° 42°

MayM
61° 49°

JunJ
68° 57°

JulJ
73° 62°

AugA
69° 55°

SepS
58° 43°

OctO
42° 31°

NovN
29° 19°

DecD

Highs and lows
Monthly rainfall
Best time

Month	High	Low	Rain	Rainy daysDays	Sun (h/day)	Water	Waves	Cyclones
JanuaryJan	24°	14°	2.91 in	16	3.4	33°	4.7 ft	–
FebruaryFeb	25°	12°	1.90 in	11	5.5	32°	4.4 ft	–
MarchMar	34°	22°	2.13 in	9	6.2	34°	3.6 ft	–
AprilApr	47°	34°	2.09 in	7	6.0	39°	3.6 ft	–
MayMay	57°	42°	2.44 in	9	6.0	43°	3.1 ft	–
JuneJun	61°	49°	2.61 in	8	5.2	50°	2.7 ft	–
JulyJul	68°	57°	4.13 in	9	4.7	58°	2.4 ft	–
AugustAug	73°	62°	4.67 in	11	4.6	64°	2.8 ft	–
SeptemberSep	69°	55°	4.44 in	13	5.5	64°	3.3 ft	3
OctoberOct	58°	43°	3.97 in	13	4.5	55°	4.6 ft	1
NovemberNov	42°	31°	3.93 in	16	2.8	45°	5.2 ft	–
DecemberDec	29°	19°	4.01 in	18	2.4	38°	5.8 ft	–

Month	Water	Waves	Cyclones
Jan	33°	4.7 ft	–
Feb	32°	4.4 ft	–
Mar	34°	3.6 ft	–
Apr	39°	3.6 ft	–
May	43°	3.1 ft	–
Jun	50°	2.7 ft	–
Jul	58°	2.4 ft	–
Aug	64°	2.8 ft	–
Sep	64°	3.3 ft	3
Oct	55°	4.6 ft	1
Nov	45°	5.2 ft	–
Dec	38°	5.8 ft	–

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

A normal year brings 39.22 in of rain on about 141 days and about 1,700 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

Now39 °Ffeels like 33 °F

Tomorrow41 / 58 °F

It's 39 °F now (feels like 33 °F). Today, 33 °F to 42 °F; tomorrow, 41 °F to 58 °F.

Chance of rain

Today 100% 0.61 in
Fri 30 87% 0.22 in
Sat 31 75% 0.11 in
Sun 1 94% 0.13 in
Mon 2 15% 0.01 in
Tue 3 61% 0.06 in
Wed 4 55% 0.13 in

Today the chance of rain reaches 100%, with 0.61 in in total. The next day with likely rain is Friday 30: 87% and 0.22 in.

Recent rain: last 24 hours, 0.19 in; last 3 days, 0.74 in; last 7 days, 0.78 in.

Humidity and dew point

Humidity94%

Dew point38 °F

Humidity is 94% now and the dew point is 38 °F. The temperature is very close to the dew point: fog may form.

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

Visibility and fog

Now0.0 mifoggy

Clouds100%

Visibility is foggy now (0.0 mi). There may be fog today at 3:00 pm, 4:00 pm, 5:00 pm.

UV index

Now0

Today's peak1low

Fri 30: 2 · Sat 31: 1 · Sun 1: 1

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 · now Anglers expect normal activity
↘ Falling Anglers say fish feed more before the change

29.6029.8030.0030.20 29.54

Steady now (−0.03 inHg in 3 hours). Over the next 48 hours: −0.56 inHg. Steady pressure: anglers expect normal activity. Fast changes, either way, tend to affect fishing.

Air and pollen

Air qualityFair · 32

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	Snow	34 / 37 °F	0.51 in	21 mph WNW
Tue 27	Drizzle	38 / 49 °F	0.17 in	12 mph SSW
Mon 26	Light drizzle	43 / 50 °F	0.01 in	17 mph W
Sun 25	Overcast	46 / 58 °F	0	21 mph W
Sat 24	Light drizzle	55 / 61 °F	0.01 in	24 mph SW
Fri 23	Partly cloudy	45 / 56 °F	0	24 mph WSW
Thu 22	Drizzle	39 / 44 °F	0.21 in	20 mph WNW

Show all 30 days

Day	Sky	Low / high	Rain	Max wind
Wed 21	Light rain	44 / 55 °F	0.37 in	19 mph SW
Tue 20	Overcast	44 / 58 °F	0	8 mph SW
Mon 19	Rain	48 / 55 °F	0.86 in	11 mph SE
Sun 18	Overcast	42 / 54 °F	0	9 mph SSE
Sat 17	Light drizzle	42 / 52 °F	0.02 in	19 mph WNW
Fri 16	Partly cloudy	48 / 55 °F	0	19 mph W
Thu 15	Light drizzle	48 / 53 °F	0.01 in	24 mph WSW
Wed 14	Rain	50 / 66 °F	0.45 in	26 mph SW
Tue 13	Overcast	50 / 67 °F	0	8 mph S
Mon 12	Overcast	51 / 58 °F	0	10 mph ESE
Sun 11	Light drizzle	52 / 56 °F	0.04 in	9 mph ENE
Sat 10	Light drizzle	43 / 65 °F	0.05 in	5 mph W
Fri 9	Partly cloudy	46 / 62 °F	0	10 mph NW
Thu 8	Mainly clear	49 / 60 °F	0	19 mph W
Wed 7	Mainly clear	48 / 63 °F	0	18 mph W
Tue 6	Rain	51 / 63 °F	0.41 in	23 mph SW
Mon 5	Rain	43 / 60 °F	0.32 in	15 mph SE
Sun 4	Overcast	41 / 61 °F	0	10 mph SW
Sat 3	Light drizzle	43 / 55 °F	0.07 in	10 mph WNW
Fri 2	Drizzle	48 / 54 °F	0.24 in	22 mph W
Thu 1	Drizzle	51 / 61 °F	0.18 in	17 mph SSW
Wed 30	Light drizzle	54 / 60 °F	0.01 in	16 mph N
Tue 29	Rain	56 / 63 °F	0.57 in	23 mph WNW

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 HamatonbetsuQuestions

What's the weather like today in Hamatonbetsu?

Light snow, from 33 °F to 42 °F, with a light breeze from the south-southeast (7 mph) and a 100% chance of rain.

Will it rain tomorrow in Hamatonbetsu?

On Friday 30 the chance of rain is 87% (0.22 in): drizzle.

How warm will it be this week?

Between a low of 31 °F and a high of 58 °F; the warmest day, Friday 30.

What's the UV index today?

It reaches 1 (low). No special protection needed.

Is the pressure rising or falling?

It's 30.10 inHg and steady: +0.39 inHg over the last 24 hours.

When is the best time to visit Hamatonbetsu?

The best time to visit Hamatonbetsu is in August: highs of 73 °F, about 11 rainy days a month and 5 hours of sunshine a day.

What is the weather like in Hamatonbetsu in October?

In October, Hamatonbetsu normally sees highs of 58 °F and lows of 43 °F, with about 13 rainy days (3.97 in for the month) and 5 hours of sunshine a day. The sea is around 55 °F. These are 1991–2020 averages.

What are the warmest and wettest months in Hamatonbetsu?

The warmest is August, with average highs of 73 °F, and the coldest February, with lows of 12 °F. The wettest is August (4.67 in) and the driest, February.

When is typhoon season in Hamatonbetsu?

Typhoon season: in September. In the last 30 years (1996–2025), 4 tropical cyclones passed within 93 mi of Hamatonbetsu, about one every 10 years; one of them with hurricane-force winds (74 mph or more). The most recent: Nabi, in September 2005.

More about Hamatonbetsu today

Weather near Hamatonbetsu

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 10 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 3:07 pm (local time).

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