China · 1991–2020

Best time to visit
Kaiyuan.

March leads for comfortable weather in Kaiyuan: typically 25.1°C by day, 14°C at night, with 24 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortMarch

Typical high25.1°C

Typical low14°C

Rain in March24 mm

Comfort

March

March · October · November

94climate match

Beach

April

April · May · June

76climate match

Outdoors

December

December · January · February

95climate match

The weakest month is July, scoring 47 against March’s 94 — 175 mm of rain falls, and days average 27.8°C, 4° above 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

7118.8° / 8.7°

Feb

8421.5° / 10.8°

Mar

9425.1° / 14°

Apr

7727.7° / 17°

May

6328.2° / 19.1°

Jun

5428.3° / 20.7°

Jul

4727.8° / 20.4°

Aug

5127.8° / 19.8°

Sep

6827° / 18.6°

Oct

8724.4° / 16.3°

Nov

8721.9° / 12.3°

Dec

7218.8° / 9.1°

Monthly climate evidence for Kaiyuan — daylight is calculated from latitude, everything else is measured
Month	Day	Night	Rain	Wet days	Daylight	Comfort	Coverage
January	18.8°C	8.7°C	20 mm	3	10 h 49	71	Good coverage
February	21.5°C	10.8°C	16 mm	2.8	11 h 20	84	Good coverage
March	25.1°C	14°C	24 mm	3.9	11 h 57	94	Good coverage
April	27.7°C	17°C	58 mm	7.6	12 h 40	77	Strong coverage
May	28.2°C	19.1°C	102 mm	10.2	13 h 16	63	Good coverage
June	28.3°C	20.7°C	128 mm	12.8	13 h 35	54	Good coverage
July	27.8°C	20.4°C	175 mm	15.5	13 h 28	47	Good coverage
August	27.8°C	19.8°C	153 mm	15.5	12 h 57	51	Good coverage
September	27°C	18.6°C	100 mm	10.7	12 h 15	68	Good coverage
October	24.4°C	16.3°C	71 mm	7.8	11 h 34	87	Good coverage
November	21.9°C	12.3°C	37 mm	3.7	10 h 58	87	Good coverage
December	18.8°C	9.1°C	20 mm	2.6	10 h 41	72	Strong coverage

What has changed

Kaiyuan runs +0.9°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

+0.1

Feb

+1.1

Mar

+0.3

Apr

+0.2

May

+0.6

Jun

+1.1

Jul

+1.5

Aug

+1.6

Sep

+1.3

Oct

+0.8

Nov

+1.7

Dec

+0.4

March daytime highs, 2011–2025. Last recorded: 23.2°C.

Records at MENGZI, 1951–2026
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	30.1°C1 Jan 1954	-3.9°C3 Jan 1974	99 mm8 Jan 2019	116 mm2019 · driest 0 mm in 1974	76
February	31.3°C7 Feb 2013	-0.4°C9 Feb 2004	69 mm8 Feb 2021	88 mm2021 · driest 0 mm in 1955	76
March	33.2°C28 Mar 1975	-1.8°C5 Mar 1986	44 mm8 Mar 1973	90 mm1973 · driest 0 mm in 1966	76
April	35.9°C19 Apr 1983	4.4°C13 Apr 1970	66 mm12 Apr 1970	143 mm1968 · driest 5 mm in 2024	76
May	36.7°C31 May 2023	9.6°C21 May 1960	92 mm4 May 1976	208 mm1990 · driest 22 mm in 2005	76
June	36.7°C1 Jun 2023	12.2°C2 Jun 1968	78 mm28 Jun 2011	257 mm1984 · driest 16 mm in 2020	76
July	34.5°C26 Jul 2024	13.5°C29 Jul 1989	123 mm26 Jul 1998	321 mm1970 · driest 42 mm in 1984	76
August	33.9°C27 Aug 2020	12.4°C16 Aug 1992	75 mm6 Aug 1978	323 mm1971 · driest 18 mm in 1992	75
September	33.3°C2 Sep 1992	8.6°C24 Sep 1977	68 mm23 Sep 1957	195 mm1978 · driest 23 mm in 1963	75
October	31.5°C5 Oct 2023	2.9°C30 Oct 1978	88 mm8 Oct 2006	238 mm1965 · driest 0 mm in 2009	75
November	29.2°C7 Nov 2009	-0.1°C10 Nov 1992	75 mm11 Nov 1983	162 mm1983 · driest 0 mm in 2019	75
December	27.1°C18 Dec 1966	-4.4°C16 Dec 1954	70 mm14 Dec 2013	120 mm1970 · driest 0 mm in 2020	75

Typical days per month at MENGZI, 1991–2020
Month	Days 25°C+	Days 30°C+	Heavy rain (10 mm+)
January	2	0	<1
February	8	<1	<1
March	19	3	<1
April	23	10	2
May	26	11	3
June	27	8	3
July	28	5	6
August	28	5	5
September	25	3	3
October	16	<1	2
November	4	0	1
December	1	0	<1

How often, not how much — every day in MENGZI’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	48%	10%	2%	7%	16.3–21.2°C
February	64%	10%	2%	7%	18.7–24.1°C
March	79%	13%	3%	12%	23.0–27.2°C
April	77%	23%	6%	24%	26.0–29.9°C
May	68%	33%	10%	44%	26.6–30.5°C
June	61%	41%	13%	57%	26.7–29.4°C
July	53%	48%	16%	70%	26.6–28.8°C
August	51%	50%	17%	70%	26.5–28.9°C
September	67%	34%	10%	37%	25.6–28.2°C
October	74%	23%	5%	23%	23.0–25.5°C
November	67%	14%	4%	11%	19.8–23.5°C
December	45%	8%	1%	5%	16.5–20.4°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.

1951Each stripe is one year’s mean temperature against the 69-year average. Warmest: 2023. Coolest: 1971.2025

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 1804850
NOAA station: CHM00056985 · MENGZI
Station distance: 35.9 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 23 usable years
Daylight: Calculated from latitude 23.70°, mid-month, sunrise to sunset including refraction. Not a station measurement.
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 MENGZI is what differs

Mengzi→Zhongheying→Yuguopu→Xin’ansuo→Tangdian→Shiwopu→

Or put two places side by side: Kaiyuan vs Mengzi

Best time to visitKaiyuan.