North Korea · 1991–2020

Best time to visit
Rajin.

September leads for comfortable weather in Rajin: typically 22.2°C by day, 13.6°C at night, with 91 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortSeptember

Typical high22.2°C

Typical low13.6°C

Rain in September91 mm

Comfort

September

September · July · June

81climate match

Beach

August

August · September · July

55climate match

Outdoors

October

October · June · September

75climate match

The weakest month is January, scoring 5 against September’s 81 — days reach only -4.2°C, 28° below the 24°C the score treats as ideal.

Month by month

The whole year,
without the guesswork.

The bars show the comfort score. Day and night temperatures come from daily observed highs and lows; rain is the historical monthly estimate.

Jan

5-4.2° / -12.5°

Feb

5-0.4° / -9.7°

Mar

55.5° / -3.8°

Apr

3712.3° / 2.8°

May

5016.6° / 8°

Jun

6619.6° / 12.8°

Jul

6923.4° / 17.5°

Aug

6625.4° / 18.9°

Sep

8122.2° / 13.6°

Oct

5215.5° / 6.2°

Nov

75.6° / -2.5°

Dec

5-2.4° / -9.9°

Monthly climate evidence for Rajin — daylight is calculated from latitude, everything else is measured, sea temperature from the nearest open water 16 km away
Month	Day	Night	Rain	Wet days	Sea	Daylight	Comfort	Coverage
January	-4.2°C	-12.5°C	11 mm	1.3	3.4°C	9 h 24	5	Strong coverage
February	-0.4°C	-9.7°C	9 mm	1.8	2.5°C	10 h 30	5	Strong coverage
March	5.5°C	-3.8°C	19 mm	2.9	2.8°C	11 h 48	5	Strong coverage
April	12.3°C	2.8°C	43 mm	4.8	5.1°C	13 h 18	37	Strong coverage
May	16.6°C	8°C	90 mm	9.1	8.7°C	14 h 34	50	Strong coverage
June	19.6°C	12.8°C	100 mm	10.5	13.8°C	15 h 15	66	Strong coverage
July	23.4°C	17.5°C	154 mm	12.3	18.7°C	14 h 59	69	Strong coverage
August	25.4°C	18.9°C	147 mm	10.5	21.5°C	13 h 53	66	Strong coverage
September	22.2°C	13.6°C	91 mm	6.1	19.5°C	12 h 26	81	Strong coverage
October	15.5°C	6.2°C	53 mm	4.3	15.9°C	10 h 59	52	Strong coverage
November	5.6°C	-2.5°C	30 mm	3.5	11.4°C	9 h 43	7	Strong coverage
December	-2.4°C	-9.9°C	12 mm	2.5	6.8°C	9 h 06	5	Strong coverage

What has changed

Rajin runs +1.2°C
on the 1961–1990 baseline.

Each bar compares the 2011–2025 daytime average for that month against the same month in 1961–1990, measured at the same station. Months where the older record is too thin to compare are left blank.

Jan

+1.0

Feb

+1.6

Mar

+1.8

Apr

+1.5

May

+1.0

Jun

+1.3

Jul

+2.2

Aug

+1.1

Sep

+1.4

Oct

+1.1

Nov

+0.4

Dec

-0.2

September daytime highs, 2011–2024. Last recorded: 23.0°C.

Records at POSET, 1936–2025
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	10.0°C28 Jan 1983	-26.5°C4 Jan 1970	51 mm21 Jan 2002	97 mm2002 · driest 0 mm in 1975	90
February	13.3°C28 Feb 2025	-22.2°C3 Feb 2001	45 mm13 Feb 1972	65 mm1972 · driest 0 mm in 2025	90
March	22.4°C27 Mar 2015	-20.2°C3 Mar 1951	49 mm23 Mar 1994	79 mm2007 · driest 0 mm in 2003	89
April	27.9°C21 Apr 2018	-6.2°C2 Apr 1941	55 mm22 Apr 2012	132 mm2006 · driest 2 mm in 2019	90
May	33.5°C29 May 1951	0.2°C10 May 1939	83 mm22 May 1955	213 mm1955 · driest 5 mm in 2003	90
June	34.4°C24 Jun 2010	5.1°C5 Jun 1945	116 mm17 Jun 1986	270 mm1986 · driest 15 mm in 1955	90
July	36.4°C21 Jul 1939	8.8°C1 Jul 1976	92 mm20 Jul 2002	360 mm1991 · driest 32 mm in 1997	90
August	35.3°C1 Aug 2018	9.3°C30 Aug 2017	258 mm30 Aug 1998	598 mm2023 · driest 11 mm in 1991	90
September	34.1°C13 Sep 1960	2.2°C27 Sep 1964	196 mm12 Sep 1971	359 mm1971 · driest 2 mm in 2001	89
October	28.7°C7 Oct 1950	-9.2°C23 Oct 1986	91 mm25 Oct 1980	179 mm1974 · driest 1 mm in 1957	88
November	19.5°C3 Nov 2006	-18.8°C27 Nov 1947	70 mm27 Nov 1977	107 mm1977 · driest 0 mm in 2008	89
December	10.9°C2 Dec 1958	-26.7°C17 Dec 1965	44 mm1 Dec 2014	69 mm1990 · driest 0 mm in 1960	89

Typical days per month at POSET, 1991–2020
Month	Days 25°C+	Days 30°C+	Frost nights	Heavy rain (10 mm+)
January	0	0	31	<1
February	0	0	28	<1
March	0	0	26	<1
April	<1	0	4	2
May	1	<1	0	3
June	4	<1	0	3
July	11	2	0	4
August	17	2	0	4
September	4	<1	0	3
October	<1	0	2	2
November	0	0	21	<1
December	0	0	30	<1

The best month has moved. On the 1961–1990 numbers the strongest month here was July (scoring 79); on 2011–2025 it is September (87). Both are scored the same way, from the same station — only the climate underneath changed.

How often, not how much — every day in POSET’s record sorted by what it was actually like, rather than averaged
Month	Warm & dry days	Wet days	Washouts	Week with 3+ wet days	Daytime mean has ranged
January	0%	5%	<1%	1%	-7.7–-2.5°C
February	0%	6%	1%	3%	-4.6–1.1°C
March	<1%	10%	1%	5%	2.1–6.8°C
April	3%	17%	4%	16%	9.6–13.9°C
May	20%	26%	7%	31%	14.3–18.0°C
June	31%	35%	10%	47%	16.8–21.4°C
July	52%	38%	12%	51%	20.2–25.3°C
August	64%	35%	14%	44%	23.0–27.0°C
September	61%	23%	9%	22%	20.5–22.9°C
October	9%	14%	4%	6%	13.7–16.7°C
November	0%	11%	3%	6%	2.7–7.3°C
December	0%	7%	<1%	2%	-5.8–-0.2°C

A warm and dry day reaches 20°C with under 1 mm of rain; a wet day gets 1 mm or more; a washout gets 10 mm or more. The week column is the share of seven-day stretches in that month, across the station’s whole daily record, that contained three or more wet days — the odds a week-long trip is rained on repeatedly, counted rather than modelled. The last column is the 10th to 90th percentile of that month’s daytime average across individual years: a narrow band means the average is what you will get, a wide one means the average is a midpoint between years that felt quite different.

1938Each stripe is one year’s mean temperature against the 84-year average. Warmest: 2024. Coolest: 1947.2024

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 2042645
NOAA station: RSM00031969 · POSET
Station distance: 61 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 29 usable years
Daylight: Calculated from latitude 42.26°, mid-month, sunrise to sunset including refraction. Not a station measurement.
Sea temperature: NOAA OISST v2.1 1991–2020 monthly climatology, nearest open water 16 km from the place centre. A sheltered bay can run warmer than the open sea it is measured from.
Important limit: Historical climate is not a forecast. Nearby stations can miss mountains, coasts, and local microclimates.

These places read the same station, so their numbers are identical — distance from POSET is what differs

Ŭndŏk→Hunchun→Aoji-ri→Sŏnbong→Unggi→Ungsang-nodongjagu→

Or put two places side by side: Rajin vs Ŭndŏk

Best time to visitRajin.