United States · 1991–2020

Best time to visit
Peru.

August leads for comfortable weather in Peru: typically 25.4°C by day, 13.5°C at night, with 115 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortAugust

Typical high25.4°C

Typical low13.5°C

Rain in August115 mm

Comfort

August

August · July · June

75climate match

Beach

July

July · August · June

49climate match

Outdoors

September

September · May · June

79climate match

The weakest month is January, scoring 5 against August’s 75 — days reach only -2.8°C, 27° 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

5-2.8° / -13.7°

Feb

5-0.6° / -13.2°

Mar

54.3° / -7°

Apr

1811.5° / 0.1°

May

5219° / 5.8°

Jun

7324.1° / 11.8°

Jul

7426° / 14°

Aug

7525.4° / 13.5°

Sep

6721.2° / 9.1°

Oct

2914.1° / 2.9°

Nov

56.6° / -2°

Dec

50.6° / -8.4°

Monthly climate evidence for Peru — daylight is calculated from latitude, everything else is measured
Month	Day	Night	Rain	Wet days	Daylight	Comfort	Coverage
January	-2.8°C	-13.7°C	78 mm	8.2	9 h 11	5	Good coverage
February	-0.6°C	-13.2°C	62 mm	6.7	10 h 22	5	Good coverage
March	4.3°C	-7°C	87 mm	7.7	11 h 46	5	Good coverage
April	11.5°C	0.1°C	105 mm	8.1	13 h 24	18	Good coverage
May	19°C	5.8°C	97 mm	10.2	14 h 46	52	Good coverage
June	24.1°C	11.8°C	132 mm	10.6	15 h 32	73	Good coverage
July	26°C	14°C	114 mm	10.7	15 h 14	74	Good coverage
August	25.4°C	13.5°C	115 mm	9.9	14 h 02	75	Good coverage
September	21.2°C	9.1°C	96 mm	7.8	12 h 28	67	Good coverage
October	14.1°C	2.9°C	117 mm	9	10 h 54	29	Good coverage
November	6.6°C	-2°C	119 mm	8.5	9 h 31	5	Good coverage
December	0.6°C	-8.4°C	88 mm	8.5	8 h 51	5	Good coverage

Records at RUMFORD 1 SSE, 1948–2009
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	16.1°C4 Jan 1950	-37.8°C20 Jan 1994	83 mm9 Jan 1978	214 mm1978 · driest 8 mm in 1981	60
February	16.1°C1 Feb 1989	-36.7°C2 Feb 1962	64 mm7 Feb 1951	201 mm1969 · driest 4 mm in 1987	60
March	27.2°C31 Mar 1998	-30.6°C4 Mar 2003	112 mm31 Mar 1987	287 mm1953 · driest 14 mm in 1965	59
April	32.2°C27 Apr 1990	-18.3°C1 Apr 1964	74 mm3 Apr 2005	244 mm2005 · driest 14 mm in 1999	58
May	35.6°C22 May 1977	-5.0°C4 May 1951	73 mm13 May 2006	252 mm1989 · driest 9 mm in 1992	60
June	36.7°C17 Jun 1994	-0.6°C7 Jun 1958	99 mm14 Jun 1998	390 mm1998 · driest 16 mm in 1963	61
July	36.7°C20 Jul 1977	3.3°C30 Jul 1952	61 mm8 Jul 1994	217 mm1996 · driest 29 mm in 1989	60
August	37.8°C2 Aug 1975	1.1°C31 Aug 1965	88 mm5 Aug 1989	273 mm1991 · driest 23 mm in 1996	59
September	35.0°C10 Sep 2002	-3.9°C29 Sep 1980	109 mm12 Sep 1960	277 mm1999 · driest 11 mm in 1978	60
October	30.0°C7 Oct 1963	-9.4°C22 Oct 1959	91 mm29 Oct 2006	281 mm2005 · driest 20 mm in 1994	60
November	23.9°C2 Nov 1950	-18.9°C24 Nov 1989	94 mm26 Nov 1950	313 mm1963 · driest 40 mm in 1976	60
December	19.4°C7 Dec 1998	-33.9°C17 Dec 1951	98 mm27 Dec 1969	321 mm1973 · driest 19 mm in 1998	58

Typical days per month at RUMFORD 1 SSE, 1991–2020
Month	Days 25°C+	Days 30°C+	Frost nights	Heavy rain (10 mm+)	Snow days
January	0	0	27	3	7
February	0	0	25	2	5
March	<1	0	27	3	5
April	<1	0	14	3	2
May	5	1	2	3	0
June	15	4	0	4	0
July	20	4	0	3	0
August	18	4	0	4	0
September	7	1	<1	3	0
October	<1	0	9	4	<1
November	0	0	20	4	2
December	0	0	27	3	6

How often, not how much — every day in RUMFORD 1 SSE’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%	26%	8%	27%	-5.6–-0.3°C
February	0%	24%	8%	23%	-3.9–1.6°C
March	<1%	26%	9%	29%	2.1–6.4°C
April	9%	32%	11%	43%	9.2–13.6°C
May	37%	33%	10%	43%	15.7–21.1°C
June	57%	35%	12%	46%	21.3–25.8°C
July	66%	32%	10%	39%	24.1–27.7°C
August	66%	30%	11%	35%	23.5–26.7°C
September	45%	28%	10%	31%	19.0–22.2°C
October	14%	29%	11%	37%	12.1–16.2°C
November	<1%	32%	13%	39%	4.3–8.8°C
December	0%	27%	10%	31%	-2.7–2.4°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.

1949Each stripe is one year’s mean temperature against the 54-year average. Warmest: 1998. Coolest: 1956.2008

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 4975080
NOAA station: USC00177325 · RUMFORD 1 SSE
Station distance: 10.8 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 15 usable years
Daylight: Calculated from latitude 44.51°, 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 RUMFORD 1 SSE is what differs

Rumford→Mexico→Dixfield→Carthage→Roxbury→Byron→

Or put two places side by side: Peru vs Rumford

Best time to visitPeru.