Ji Paraná climate — normals and trends

Q: What is the climate of Ji Paraná?

Ji Paraná has a tropical savanna climate (Köppen Aw). Over 1940-2025, the average annual temperature is 25.5 °C and it receives 1,714 mm of precipitation per year.

Q: What is the hottest day ever recorded in Ji Paraná?

The hottest day measured in Ji Paraná between 1940 and 2025 was 16 September 1961, reaching 40.6 °C.

Q: What is the coldest day in Ji Paraná?

The coldest day measured in Ji Paraná between 1940 and 2025 was 18 July 1975, at 10.3 °C.

Q: Does it snow in Ji Paraná?

Almost never: Ji Paraná sees virtually no snow, with about 0 frost days per year.

Q: Has the climate of Ji Paraná warmed?

Yes: Ji Paraná warmed by +1.0 °C between 1940 and 2025, a statistically significant trend.

Q: What is the wettest day in Ji Paraná?

The wettest day measured in Ji Paraná between 1940 and 2025 was 20 January 1965, with 166 mm of rain in 24 hours.

Q: What was the windiest day in Ji Paraná?

The windiest day measured in Ji Paraná between 1940 and 2025 was 19 January 1965, with winds reaching 27.3 km/h.

Q: What is the warmest month in Ji Paraná?

The warmest month in Ji Paraná is September (27.0 °C on average); the coldest is May (24.5 °C).

Q: How much does it rain in Ji Paraná?

Ji Paraná receives on average 1,714 mm of precipitation per year, spread over about 218 rainy days.

Q: Is it sunny in Ji Paraná?

Ji Paraná gets on average 9.7 hours of sunshine per day, roughly 3,540 hours per year over 1940-2025.

Ji Paraná (Brazil) has a tropical savanna climate (Aw) under the Köppen-Geiger classification. Its mean annual temperature is 25.5 °C and it receives 1,714 mm of precipitation per year.

These figures are normals computed over 86 complete calendar years, from 1940 to 2025, using ERA5 reanalysis data from the Copernicus programme.

The warmest month is September (27.0 °C on average) and the coldest is May (24.5 °C). Rainfall peaks in January.

Ji Paraná averages 0 frost days, 211 hot days (≥ 30 °C) and 218 rainy days per year.

Ji Paraná has warmed by +1.0 °C between 1940 and 2025, or +0.11 °C per decade. This trend is statistically significant.

The hottest day of the period reached 40.6 °C (on 16 September 1961) and the coldest 10.3 °C (on 18 July 1975).

Data from ERA5 reanalysis (Copernicus Climate Change Service), redistributed under a CC-BY 4.0 licence. Normals are recomputed whenever the archive is updated.

Climate normals · ERA5

Ji ParanáRondônia

coords: -10.89°, -61.95°
period: 1940–2025 · 86 yrs

AwTropical savannaWarmest monthSeptemberColdest monthMayWettest monthJanuaryDriest monthJuly

Mean daily temperature

25.5°C

Average daily high

30.6°C

Average daily low

21.9°C

Annual rainfall

1,714mm

Sunshine / day

9.7h

Mean relative humidity

81%

Average peak wind

9.3km/h

Seasonal range

2.5°C

Frost days (< 0 °C)

0 d/yr

Hot days (≥ 30 °C)

211 d/yr

Rainy days (≥ 1 mm)

218 d/yr

Annual snowfall

0.0 cm

Average feels-like high

35.8 °C

Average feels-like low

25.3 °C

Average peak gust

26.1 km/h

Tropical nights (≥ 20 °C)

326 d/yr

Solar radiation

18.4 MJ/m²

Has the climate changed?

One stripe per year, 1940 to 2025

+1.0 °C

since 1940

+0.1 °C per decade · r² = 0.36 · p = < 0.001

19402025

Trend fitted by linear regression (ordinary least squares) on annual means. A trend is shown only when it is statistically significant (p < 0.05).

A climograph overlays rainfall (bars) and temperature (line): the standard reading in climatology, where you can see at a glance whether the warm season is also the dry one.

Records for the period

Hottest day

40.6 °C

16 September 1961

Coldest day

10.3 °C

18 July 1975

Wettest day

166 mm

20 January 1965

Windiest day

27.3 km/h

19 January 1965

Strongest gust

59.4 km/h

19 August 2022

Hottest feels-like

44.6 °C

24 October 2015

Coldest feels-like

5.4 °C

18 July 1975

Sunniest day

12.6 h

14 January 1946

Year	Hottest day	Coldest day	Annual mean	Rainfall	Hot days
2025	37.8 °C13 September 2025	15.0 °C2 July 2025	26.1 °C	1,776 mm	256
2024	37.7 °C23 August 2024	15.6 °C10 August 2024	26.9 °C	1,469 mm	289
2023	37.8 °C21 October 2023	12.5 °C14 June 2023	26.5 °C	1,672 mm	283
2022	36.6 °C14 November 2022	13.9 °C20 May 2022	25.9 °C	1,599 mm	263
2021	36.2 °C10 August 2021	12.5 °C30 June 2021	26.0 °C	1,877 mm	242
2020	37.3 °C17 August 2020	12.6 °C22 August 2020	26.3 °C	1,517 mm	278
2019	38.5 °C20 September 2019	15.1 °C4 August 2019	26.1 °C	1,626 mm	259
2018	37.5 °C9 September 2018	15.5 °C10 July 2018	25.5 °C	1,758 mm	226
2017	37.4 °C27 August 2017	11.1 °C18 July 2017	25.9 °C	1,589 mm	264
2016	37.2 °C5 August 2016	15.7 °C5 September 2016	26.1 °C	2,057 mm	262
2015	39.3 °C24 October 2015	17.9 °C20 June 2015	26.4 °C	1,675 mm	265
2014	36.4 °C6 September 2014	15.7 °C25 July 2014	25.8 °C	1,929 mm	216
2013	36.6 °C27 September 2013	13.4 °C25 July 2013	25.6 °C	2,032 mm	228
2012	37.8 °C10 September 2012	16.3 °C8 June 2012	25.9 °C	1,913 mm	250
2011	37.8 °C10 September 2011	16.0 °C5 July 2011	26.1 °C	1,846 mm	245
2010	37.5 °C30 September 2010	12.7 °C17 July 2010	26.1 °C	1,514 mm	273
2009	37.6 °C9 September 2009	14.4 °C25 July 2009	25.9 °C	1,779 mm	243
2008	37.0 °C30 September 2008	16.1 °C31 May 2008	25.7 °C	1,708 mm	224
2007	36.8 °C29 September 2007	15.2 °C27 July 2007	25.8 °C	1,591 mm	253
2006	36.6 °C2 September 2006	16.2 °C13 May 2006	25.7 °C	1,649 mm	246
2005	38.0 °C24 September 2005	16.1 °C10 August 2005	25.9 °C	1,593 mm	267
2004	36.6 °C18 August 2004	15.5 °C13 June 2004	25.8 °C	1,868 mm	232
2003	35.7 °C5 September 2003	15.5 °C11 September 2003	25.7 °C	1,684 mm	247
2002	36.4 °C26 October 2002	18.2 °C24 June 2002	26.1 °C	1,528 mm	268
2001	36.4 °C19 August 2001	12.4 °C19 June 2001	25.5 °C	1,646 mm	216
2000	36.6 °C31 August 2000	12.6 °C13 July 2000	25.4 °C	1,525 mm	227
1999	36.5 °C11 October 1999	12.2 °C16 August 1999	25.5 °C	1,585 mm	231
1998	36.1 °C29 September 1998	16.4 °C18 May 1998	26.1 °C	1,684 mm	266
1997	36.2 °C19 September 1997	16.4 °C10 August 1997	25.6 °C	1,765 mm	229
1996	36.3 °C16 September 1996	13.1 °C30 June 1996	25.2 °C	1,840 mm	207
1995	37.4 °C6 October 1995	17.0 °C20 June 1995	25.6 °C	1,711 mm	230
1994	35.8 °C25 September 1994	12.3 °C10 July 1994	25.4 °C	1,890 mm	215
1993	34.5 °C23 September 1993	12.4 °C31 July 1993	25.2 °C	1,810 mm	219
1992	34.2 °C15 October 1992	14.4 °C24 July 1992	25.2 °C	1,810 mm	234
1991	35.3 °C31 August 1991	14.6 °C4 August 1991	25.3 °C	1,751 mm	227
1990	36.0 °C21 September 1990	13.7 °C22 July 1990	25.2 °C	1,676 mm	221
1989	36.0 °C19 September 1989	11.1 °C7 July 1989	25.0 °C	1,897 mm	200
1988	36.3 °C25 September 1988	14.1 °C13 July 1988	25.3 °C	1,762 mm	210
1987	36.2 °C8 October 1987	15.4 °C8 August 1987	25.6 °C	1,787 mm	241
1986	35.8 °C4 November 1986	13.8 °C2 June 1986	25.2 °C	1,575 mm	203
1985	35.7 °C8 September 1985	11.1 °C11 June 1985	25.0 °C	1,925 mm	186
1984	35.4 °C9 August 1984	11.9 °C26 August 1984	25.2 °C	1,709 mm	212
1983	36.5 °C25 September 1983	14.9 °C3 August 1983	25.5 °C	1,705 mm	235
1982	35.3 °C4 September 1982	17.0 °C28 May 1982	25.3 °C	1,559 mm	195
1981	34.9 °C9 September 1981	10.7 °C20 July 1981	25.1 °C	1,881 mm	212
1980	34.8 °C8 August 1980	15.1 °C4 July 1980	25.3 °C	1,656 mm	224
1979	35.1 °C6 August 1979	13.6 °C1 June 1979	25.2 °C	1,431 mm	226
1978	35.2 °C23 August 1978	12.0 °C15 August 1978	25.0 °C	1,856 mm	194
1977	36.0 °C10 September 1977	12.4 °C18 May 1977	24.9 °C	1,962 mm	177
1976	35.4 °C19 August 1976	14.0 °C1 July 1976	24.6 °C	1,772 mm	163
1975	34.8 °C1 September 1975	10.3 °C18 July 1975	24.9 °C	1,504 mm	198
1974	34.2 °C31 July 1974	16.2 °C15 June 1974	24.6 °C	1,845 mm	147
1973	34.7 °C28 September 1973	16.6 °C24 July 1973	25.2 °C	1,736 mm	199
1972	35.1 °C2 October 1972	14.4 °C1 September 1972	25.2 °C	1,781 mm	182
1971	35.5 °C1 September 1971	15.8 °C26 April 1971	24.7 °C	1,786 mm	158
1970	35.9 °C23 August 1970	16.0 °C3 July 1970	25.2 °C	1,806 mm	215
1969	36.9 °C15 August 1969	13.0 °C11 July 1969	25.8 °C	1,407 mm	251
1968	35.3 °C30 July 1968	12.5 °C17 May 1968	24.9 °C	1,633 mm	195
1967	36.2 °C28 September 1967	16.9 °C28 June 1967	25.3 °C	1,585 mm	199
1966	36.9 °C23 August 1966	15.3 °C3 June 1966	25.3 °C	1,483 mm	186
1965	36.3 °C18 September 1965	13.0 °C20 August 1965	25.1 °C	2,426 mm	167
1964	36.3 °C6 September 1964	16.9 °C7 June 1964	25.4 °C	1,541 mm	183
1963	40.0 °C17 October 1963	15.3 °C6 July 1963	26.2 °C	1,290 mm	192
1962	37.6 °C16 September 1962	14.4 °C15 June 1962	25.3 °C	1,671 mm	165
1961	40.6 °C16 September 1961	14.3 °C18 June 1961	26.4 °C	1,169 mm	241
1960	37.3 °C27 September 1960	14.5 °C24 May 1960	25.5 °C	1,885 mm	185
1959	38.1 °C10 September 1959	16.7 °C8 June 1959	25.6 °C	1,562 mm	203
1958	38.1 °C25 August 1958	17.5 °C24 June 1958	25.8 °C	1,939 mm	210
1957	38.1 °C19 September 1957	14.1 °C21 July 1957	25.8 °C	1,664 mm	184
1956	35.6 °C7 September 1956	16.3 °C6 June 1956	24.8 °C	1,686 mm	132
1955	37.4 °C26 September 1955	12.0 °C31 July 1955	25.3 °C	1,657 mm	155
1954	36.9 °C14 September 1954	17.5 °C5 July 1954	25.4 °C	1,612 mm	170
1953	35.6 °C7 August 1953	17.2 °C6 July 1953	25.1 °C	2,042 mm	154
1952	36.1 °C9 August 1952	16.6 °C21 June 1952	25.1 °C	2,045 mm	156
1951	36.3 °C14 August 1951	16.6 °C25 July 1951	25.3 °C	1,755 mm	186
1950	37.1 °C23 August 1950	16.1 °C4 August 1950	25.0 °C	1,988 mm	141
1949	36.3 °C2 September 1949	16.4 °C2 July 1949	25.7 °C	1,290 mm	220
1948	36.6 °C22 August 1948	17.0 °C2 June 1948	25.7 °C	1,056 mm	217
1947	35.8 °C22 August 1947	14.7 °C20 May 1947	24.9 °C	1,968 mm	148
1946	36.2 °C20 August 1946	14.5 °C18 July 1946	25.2 °C	1,635 mm	187
1945	37.3 °C30 August 1945	15.6 °C26 May 1945	25.0 °C	2,060 mm	148
1944	35.3 °C4 August 1944	16.7 °C28 June 1944	25.1 °C	1,963 mm	164
1943	34.1 °C21 August 1943	16.6 °C6 June 1943	24.3 °C	1,801 mm	106
1942	37.7 °C17 September 1942	12.1 °C20 June 1942	25.1 °C	1,442 mm	180
1941	35.6 °C10 October 1941	14.9 °C7 July 1941	25.3 °C	1,705 mm	184
1940	36.0 °C20 August 1940	17.0 °C11 July 1940	25.2 °C	1,588 mm	164

Normals computed over complete calendar years 1940–2025.

A specific year

Pick a year and see how it compares to normal — warmer, drier or more extreme than usual?

Year

Across the whole year

Average daily high

31.3 °C

+0.7 °C

Hot days (≥ 30 °C)

256 d/yr

+45

Frost days (< 0 °C)

0 d/yr

Annual rainfall

1776 mm

+62 mm

Month by month

	High	vs. normal	Precipitation	vs. normal
Jan	29.3 °C	+0.1 °C	257 mm	-4 mm
Feb	29.3 °C	+0.2 °C	219 mm	-40 mm
Mar	30.1 °C	+0.8 °C	282 mm	+46 mm
Apr	30.2 °C	+0.8 °C	201 mm	+44 mm
May	30.5 °C	+1.3 °C	66 mm	-12 mm
Jun	30.9 °C	+0.6 °C	15 mm	-6 mm
Jul	32.4 °C	+0.5 °C	0 mm	-12 mm
Aug	33.8 °C	+0.4 °C	4 mm	-22 mm
Sep	34.3 °C	+1.1 °C	53 mm	-26 mm
Oct	33.1 °C	+1.1 °C	103 mm	-39 mm
Nov	32.2 °C	+1.6 °C	157 mm	-41 mm
Dec	29.3 °C	-0.3 °C	419 mm	+173 mm

The year's extremes

Hottest day

37.8 °C

13 Sep 2025

Coldest day

15.0 °C

2 Jul 2025

Wettest day

66.6 mm

8 Feb 2025

Windiest day

18.9 km/h

11 May 2025

Strongest gust

45.7 km/h

20 Jan 2025

Hottest feels-like

41.9 °C

13 Sep 2025

Coldest feels-like

13.9 °C

2 Jul 2025

Sunniest day

12.5 h

24 Jan 2025

What was the weather like that day?

Your birthday, a wedding, a memorable trip: discover the actual weather for any date since 1940.

Date

Frequently asked questions

What is the climate of Ji Paraná?

Ji Paraná has a tropical savanna climate (Köppen Aw). Over 1940-2025, the average annual temperature is 25.5 °C and it receives 1,714 mm of precipitation per year.

What is the hottest day ever recorded in Ji Paraná?

The hottest day measured in Ji Paraná between 1940 and 2025 was 16 September 1961, reaching 40.6 °C.

What is the coldest day in Ji Paraná?

The coldest day measured in Ji Paraná between 1940 and 2025 was 18 July 1975, at 10.3 °C.

Does it snow in Ji Paraná?

Almost never: Ji Paraná sees virtually no snow, with about 0 frost days per year.

Has the climate of Ji Paraná warmed?

Yes: Ji Paraná warmed by +1.0 °C between 1940 and 2025, a statistically significant trend.

What is the wettest day in Ji Paraná?

The wettest day measured in Ji Paraná between 1940 and 2025 was 20 January 1965, with 166 mm of rain in 24 hours.

What was the windiest day in Ji Paraná?

The windiest day measured in Ji Paraná between 1940 and 2025 was 19 January 1965, with winds reaching 27.3 km/h.

What is the warmest month in Ji Paraná?

The warmest month in Ji Paraná is September (27.0 °C on average); the coldest is May (24.5 °C).

How much does it rain in Ji Paraná?

Ji Paraná receives on average 1,714 mm of precipitation per year, spread over about 218 rainy days.

Is it sunny in Ji Paraná?

Ji Paraná gets on average 9.7 hours of sunshine per day, roughly 3,540 hours per year over 1940-2025.

Are there tropical nights in Ji Paraná?

Yes: Ji Paraná has on average 326 tropical nights per year (temperature staying above 20 °C), over 1940-2025.

What was the most extreme apparent temperature in Ji Paraná?

In Ji Paraná, between 1940 and 2025, the highest apparent temperature reached 44.6 °C on 24 October 2015, and the lowest was 5.4 °C on 18 July 1975.

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