Weather in Iwŏn-ŭp

14-day forecast · updated today, Thursday, October 29, at 7:07 pm (GMT+9)

Now · clear 51 °F

Feels like: 47 °F
Low / high: 36 / 56 °F
Rain: 12%
Wind: 7 mph WSW

→ 29.94 inHg · steady

Today in Iwŏn-ŭp: overcast, 36 °F to 56 °F, with a 12% chance of rain and a light breeze from the west-southwest (7 mph). Tomorrow, partly cloudy, 38 °F to 62 °F and a 0% chance of rain. The warmest day of the week is Friday 30, at 62 °F. Next likely rain: Sunday 1 (69%).

Temperatures for the next 14 days

56° 36°
Today
62° 38°
Fri 30
53° 37°
Sat 31
49° 36°
Sun 1
55° 36°
Mon 2
58° 31°
Tue 3
55° 33°
Wed 4
58° 44°
Thu 5
49° 33°
Fri 6
46° 31°
Sat 7
42° 29°
Sun 8
52° 28°
Mon 9
43° 28°
Tue 10
46° 28°
Wed 11

Day by day

Day	Sky	Low / high	Rain	Max wind	Max wave	High tides	Model
Today · 29	Overcast	36 / 56 °F	12%	13 mph WSW	3.5 ft	3:43 am · 6:24 pm	ECMWF
Fri 30	Partly cloudy	38 / 62 °F	0%	14 mph WSW	3.1 ft	4:22 am · 7:51 pm	ECMWF
Sat 31	Overcast	37 / 53 °F	0%	9 mph NNW	2.0 ft	5:07 am	ECMWF
Sun 1	Light drizzle	36 / 49 °F	69% · 0.14 in	6 mph NNW	1.8 ft	6:03 am	ECMWF
Mon 2	Light drizzle	36 / 55 °F	24% · 0.01 in	7 mph N	1.7 ft	7:18 am · 11:57 pm	ECMWF
Tue 3	Clear sky	31 / 58 °F	0%	13 mph W	3.2 ft	9:03 am	ECMWF
Wed 4	Overcast	33 / 55 °F	3%	7 mph WNW	1.4 ft	12:20 am · 10:49 am	ECMWF
Thu 5	Overcast	44 / 58 °F	11%	10 mph WNW	2.1 ft	12:41 am · 12:15 pm	ECMWF
Fri 6	Light drizzle	33 / 49 °F	20% · 0.02 in	16 mph NW	1.6 ft	1:01 am · 1:24 pm	ECMWF
Sat 7	Mainly clear	31 / 46 °F	11%	9 mph NNW	3.0 ft	1:21 am · 2:23 pm	ECMWF
Sun 8	Clear sky	29 / 42 °F	14%	7 mph WNW	3.5 ft	1:43 am · 3:15 pm	ECMWF
Mon 9	Overcast	28 / 52 °F	8%	13 mph NW	3.2 ft	2:05 am · 4:02 pm	ECMWF
Tue 10	Mainly clear	28 / 43 °F	8%	9 mph NW	3.9 ft	2:29 am · 4:46 pm	ECMWF
Wed 11	Clear sky	28 / 46 °F	2%	7 mph W	2.6 ft	2:55 am · 5:30 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	Partly cloudy	Overcast	Overcast	Overcast	Mainly clear	Partly cloudy	Mainly clear	Clear
Temperature	36°	38°	40°	47°	54°	56°	51°	49°
Chance of rain	0%	0%	0%	0%	0%	0%	12%	0%
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)	6 NW	5 WNW	4 WNW	5 W	11 SW	13 SW	8 SW	6 WSW
Humidity	62%	53%	57%	58%	63%	65%	83%	88%
UV	0	0	0	1	2	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 on Sunday 1: 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	56°	62°	53°	49°	55°	58°	55°
AIFS	55°	62°	56°	46°	52°	60°	56°
GFS	58°	67°	55°	50°	56°	63°	55°
ICON	57°	62°	53°	53°	53°	56°	58°
Confidence	high	high	high	medium	high	medium	high

Do the models agree? · Rain
Rain	Today	Fri 30	Sat 31	Sun 1	Mon 2	Tue 3	Wed 4
ECMWF	0	0	0	0.14 in	0.01 in	0	0
AIFS	0	0	0	0.12 in	0.05 in	0	0
GFS	0	0	0	0	0	0	0
ICON	0	0	0	0.02 in	0	0	0
Confidence	high	high	high	medium	medium	high	high

Do the models agree? · Wind
Wind (mph)	Today	Fri 30	Sat 31	Sun 1	Mon 2	Tue 3	Wed 4
ECMWF	1331	1433	921	615	723	1330	723
AIFS	13	12	8	5	5	10	6
GFS	1423	1625	1015	68	118	920	76
ICON	1328	1328	719	519	513	919	515
Confidence	high	high	high	high	high	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)	12%	0%	0%	69%	24%	0%	3%
GFS (GEFS, 31 scenarios)	16%	0%	0%	10%	10%	10%	0%

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: normal temperatures, normal rain and a slightly warmer sea.

Next 6 weeks

When	TemperatureTemp.	Rain	Sea	Typical high / low
Nov 2 – Nov 8Nov 2–Nov 8	Below −3.1 °F	Normal	Normal −0.2 °F	—
Nov 9 – Nov 15Nov 9–Nov 15	Normal +0.4 °F	A bit below −33%	A bit above +0.7 °F	—
Nov 16 – Nov 22Nov 16–Nov 22	Normal +0.7 °F	Normal	Above +2.2 °F	47° / 40°
Nov 23 – Nov 29Nov 23–Nov 29	A bit above +2.2 °F	A bit above +35%	Above +2.7 °F	44° / 37°
Nov 30 – Dec 6Nov 30–Dec 6	A bit above +2.0 °F	Normal	Above +3.2 °F	42° / 34°

Coming months

When	TemperatureTemp.	Rain	Sea
November	Above +2.7 °F	A bit above +38%	—
December	A bit above +2.2 °F	A bit above +45%	—
January	A bit above +2.3 °F	Normal	—
February	Above +3.1 °F	A bit above +26%	—
March	A bit above +1.8 °F	A bit above +30%	—

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.

Iwŏn-ŭp climate by monthClimate by month

Normal weather for each month (1991–2020 averages)

The best time to visit Iwŏn-ŭp is in September and in June: highs of 71 °F to 74 °F, about 7 rainy days a month and 5 hours of sunshine a day.

Typhoon season: in September. In the last 30 years (1996–2025), 5 tropical cyclones passed within 93 mi of Iwŏn-ŭp, about 2 every 10 years. The most recent: Maysak, in September 2020.

36° 19°

JanJ
39° 22°

FebF
46° 31°

MarM
57° 38°

AprA
65° 47°

MayM
71° 58°

JunJ
77° 66°

JulJ
80° 67°

AugA
74° 57°

SepS
65° 45°

OctO
51° 33°

NovN
39° 22°

DecD

Highs and lows
Monthly rainfall
Best time

Month	High	Low	Rain	Rainy daysDays	Sun (h/day)	Water	Waves	Cyclones
JanuaryJan	36°	19°	0.95 in	2	4.9	43°	3.2 ft	–
FebruaryFeb	39°	22°	0.69 in	2	6.3	40°	2.9 ft	–
MarchMar	46°	31°	0.82 in	2	6.8	41°	2.7 ft	–
AprilApr	57°	38°	1.39 in	4	6.5	46°	2.6 ft	–
MayMay	65°	47°	2.20 in	6	6.3	54°	2.4 ft	–
JuneJun	71°	58°	2.93 in	8	5.2	62°	1.9 ft	–
JulyJul	77°	66°	5.94 in	12	3.5	70°	2.0 ft	–
AugustAug	80°	67°	5.49 in	11	4.6	73°	2.2 ft	1
SeptemberSep	74°	57°	4.22 in	6	5.7	70°	2.4 ft	4
OctoberOct	65°	45°	1.65 in	3	5.8	64°	2.7 ft	–
NovemberNov	51°	33°	1.62 in	4	5.1	55°	3.3 ft	–
DecemberDec	39°	22°	1.07 in	2	4.6	47°	3.3 ft	–

Month	Water	Waves	Cyclones
Jan	43°	3.2 ft	–
Feb	40°	2.9 ft	–
Mar	41°	2.7 ft	–
Apr	46°	2.6 ft	–
May	54°	2.4 ft	–
Jun	62°	1.9 ft	–
Jul	70°	2.0 ft	–
Aug	73°	2.2 ft	1
Sep	70°	2.4 ft	4
Oct	64°	2.7 ft	–
Nov	55°	3.3 ft	–
Dec	47°	3.3 ft	–

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

A normal year brings 28.98 in of rain on about 61 days and about 2,000 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

Now51 °Ffeels like 47 °F

Tomorrow38 / 62 °F

It's 51 °F now (feels like 47 °F). Today, 36 °F to 56 °F; tomorrow, 38 °F to 62 °F.

Chance of rain

Today 12%
Fri 30 0%
Sat 31 0%
Sun 1 69% 0.14 in
Mon 2 24% 0.01 in
Tue 3 0%
Wed 4 3%

Today the chance of rain reaches 12%. The next day with likely rain is Sunday 1: 69% and 0.14 in.

No rain in the last 7 days.

Humidity and dew point

Humidity86%

Dew point46 °F

Humidity is 86% now and the dew point is 46 °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

Clouds18%

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

Now0

Today's peak2low

Fri 30: 3 · Sat 31: 3 · 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

29.8030.0030.20 30.10

Steady now (+0.01 inHg in 3 hours). Over the next 48 hours: +0.14 inHg. Steady pressure: anglers expect normal activity. Fast changes, either way, tend to affect fishing.

Air and pollen

Air qualityFair · 23

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	Max wind
Wed 28	Mainly clear	30 / 50 °F	7 mph NW
Tue 27	Overcast	37 / 58 °F	12 mph NW
Mon 26	Overcast	49 / 61 °F	7 mph NW
Sun 25	Overcast	49 / 60 °F	9 mph NE
Sat 24	Overcast	46 / 64 °F	7 mph WNW
Fri 23	Overcast	37 / 59 °F	6 mph WNW
Thu 22	Clear sky	36 / 54 °F	13 mph WNW

Show all 30 days

Day	Sky	Low / high	Rain	Max wind
Wed 21	Light rain	44 / 53 °F	0.43 in	10 mph NNW
Tue 20	Overcast	47 / 66 °F	0	6 mph NNW
Mon 19	Light drizzle	51 / 62 °F	0.04 in	11 mph NNW
Sun 18	Rain	55 / 64 °F	1.55 in	7 mph WNW
Sat 17	Overcast	49 / 66 °F	0	9 mph NE
Fri 16	Overcast	46 / 69 °F	0	5 mph NNW
Thu 15	Partly cloudy	45 / 65 °F	0	13 mph WSW
Wed 14	Light drizzle	47 / 65 °F	0.00 in	11 mph W
Tue 13	Light rain	55 / 66 °F	0.54 in	8 mph WNW
Mon 12	Light drizzle	55 / 72 °F	0.01 in	6 mph WSW
Sun 11	Overcast	56 / 71 °F	0	6 mph NE
Sat 10	Overcast	53 / 73 °F	0	5 mph NE
Fri 9	Clear sky	52 / 74 °F	0	5 mph NNE
Thu 8	Clear sky	48 / 73 °F	0	6 mph W
Wed 7	Clear sky	51 / 70 °F	0	9 mph WNW
Tue 6	Clear sky	47 / 66 °F	0	7 mph WNW
Mon 5	Drizzle	51 / 69 °F	0.16 in	5 mph NW
Sun 4	Light rain	53 / 64 °F	0.19 in	5 mph NNE
Sat 3	Partly cloudy	51 / 66 °F	0	8 mph NNE
Fri 2	Clear sky	44 / 67 °F	0	8 mph WNW
Thu 1	Clear sky	46 / 70 °F	0	11 mph WNW
Wed 30	Light drizzle	59 / 73 °F	0.01 in	13 mph W
Tue 29	Drizzle	57 / 70 °F	0.11 in	8 mph WSW

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 Iwŏn-ŭpQuestions

What's the weather like today in Iwŏn-ŭp?

Overcast, from 36 °F to 56 °F, with a light breeze from the west-southwest (7 mph) and a 12% chance of rain.

Will it rain tomorrow in Iwŏn-ŭp?

On Friday 30 the chance of rain is 0% (0.00 in): partly cloudy.

How warm will it be this week?

Between a low of 31 °F and a high of 62 °F; the warmest day, Friday 30.

What's the UV index today?

It reaches 2 (low). No special protection needed.

Is the pressure rising or falling?

It's 29.94 inHg and steady: −0.22 inHg over the last 24 hours.

When is the best time to visit Iwŏn-ŭp?

The best time to visit Iwŏn-ŭp is in September and in June: highs of 71 °F to 74 °F, about 7 rainy days a month and 5 hours of sunshine a day.

What is the weather like in Iwŏn-ŭp in October?

In October, Iwŏn-ŭp normally sees highs of 65 °F and lows of 45 °F, with about 3 rainy days (1.65 in for the month) and 6 hours of sunshine a day. The sea is around 64 °F. These are 1991–2020 averages.

What are the warmest and wettest months in Iwŏn-ŭp?

The warmest is August, with average highs of 80 °F, and the coldest January, with lows of 19 °F. The wettest is July (5.94 in) and the driest, February.

When is typhoon season in Iwŏn-ŭp?

Typhoon season: in September. In the last 30 years (1996–2025), 5 tropical cyclones passed within 93 mi of Iwŏn-ŭp, about 2 every 10 years. The most recent: Maysak, in September 2020.

More about Iwŏn-ŭp today

Weather near Iwŏn-ŭp

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 9.6 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 7:07 pm (local time).

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