Boa Vista climate — normals and trends

Q: What is the climate of Boa Vista?

Boa Vista has a tropical monsoon climate (Köppen Am). Over 1940-2025, the average annual temperature is 26.9 °C and it receives 1,686 mm of precipitation per year.

Q: What is the hottest day ever recorded in Boa Vista?

The hottest day measured in Boa Vista between 1940 and 2025 was 14 October 1997, reaching 39.2 °C.

Q: What is the coldest day in Boa Vista?

The coldest day measured in Boa Vista between 1940 and 2025 was 21 July 1975, at 19.2 °C.

Q: Does it snow in Boa Vista?

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

Q: Has the climate of Boa Vista warmed?

Yes: Boa Vista warmed by +1.8 °C between 1940 and 2025, a statistically significant trend.

Q: What is the wettest day in Boa Vista?

The wettest day measured in Boa Vista between 1940 and 2025 was 5 April 1958, with 182 mm of rain in 24 hours.

Q: What was the windiest day in Boa Vista?

The windiest day measured in Boa Vista between 1940 and 2025 was 20 January 2003, with winds reaching 25.7 km/h.

Q: What is the warmest month in Boa Vista?

The warmest month in Boa Vista is March (28.4 °C on average); the coldest is July (25.2 °C).

Q: How much does it rain in Boa Vista?

Boa Vista receives on average 1,686 mm of precipitation per year, spread over about 201 rainy days.

Q: Is it sunny in Boa Vista?

Boa Vista gets on average 10.3 hours of sunshine per day, roughly 3,760 hours per year over 1940-2025.

Boa Vista (Brazil) has a tropical monsoon climate (Am) under the Köppen-Geiger classification. Its mean annual temperature is 26.9 °C and it receives 1,686 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 March (28.4 °C on average) and the coldest is July (25.2 °C). Rainfall peaks in May.

Boa Vista averages 0 frost days, 246 hot days (≥ 30 °C) and 201 rainy days per year.

Boa Vista has warmed by +1.8 °C between 1940 and 2025, or +0.22 °C per decade. This trend is statistically significant.

The hottest day of the period reached 39.2 °C (on 14 October 1997) and the coldest 19.2 °C (on 21 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

Boa VistaRoraima

coords: 2.82°, -60.67°
period: 1940–2025 · 86 yrs

AmTropical monsoonWarmest monthMarchColdest monthJulyWettest monthMayDriest monthFebruary

Mean daily temperature

26.9°C

Average daily high

31.1°C

Average daily low

23.6°C

Annual rainfall

1,686mm

Sunshine / day

10.3h

Mean relative humidity

78%

Average peak wind

11.6km/h

Seasonal range

3.2°C

Frost days (< 0 °C)

0 d/yr

Hot days (≥ 30 °C)

246 d/yr

Rainy days (≥ 1 mm)

201 d/yr

Annual snowfall

0.0 cm

Average feels-like high

35.9 °C

Average feels-like low

27.3 °C

Average peak gust

31.2 km/h

Tropical nights (≥ 20 °C)

364 d/yr

Solar radiation

17.8 MJ/m²

Has the climate changed?

One stripe per year, 1940 to 2025

+1.8 °C

since 1940

+0.2 °C per decade · r² = 0.53 · 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

39.2 °C

14 October 1997

Coldest day

19.2 °C

21 July 1975

Wettest day

182 mm

5 April 1958

Windiest day

25.7 km/h

20 January 2003

Strongest gust

59.4 km/h

16 January 2010

Hottest feels-like

44.7 °C

14 October 1997

Coldest feels-like

20.7 °C

6 March 1963

Sunniest day

12.0 h

9 April 1940

Year	Hottest day	Coldest day	Annual mean	Rainfall	Hot days
2025	36.0 °C23 September 2025	21.9 °C5 July 2025	27.5 °C	1,717 mm	294
2024	38.3 °C27 March 2024	22.5 °C27 August 2024	28.8 °C	1,425 mm	316
2023	38.7 °C2 October 2023	21.9 °C26 January 2023	28.3 °C	1,044 mm	322
2022	35.2 °C11 February 2022	21.8 °C24 December 2022	27.1 °C	2,160 mm	286
2021	35.4 °C16 October 2021	21.5 °C4 July 2021	27.3 °C	2,068 mm	278
2020	36.4 °C12 March 2020	22.1 °C3 January 2020	27.9 °C	1,608 mm	303
2019	37.0 °C2 April 2019	21.8 °C7 August 2019	28.0 °C	2,004 mm	295
2018	36.8 °C24 March 2018	21.9 °C19 June 2018	27.8 °C	1,790 mm	284
2017	37.2 °C18 November 2017	21.8 °C2 July 2017	27.7 °C	1,895 mm	291
2016	37.2 °C4 March 2016	21.8 °C17 June 2016	28.0 °C	1,852 mm	292
2015	37.5 °C7 April 2015	21.3 °C22 July 2015	28.2 °C	1,030 mm	312
2014	36.9 °C11 March 2014	22.2 °C29 August 2014	27.8 °C	1,272 mm	308
2013	35.8 °C8 April 2013	22.0 °C28 July 2013	27.3 °C	1,699 mm	286
2012	36.3 °C10 November 2012	22.1 °C2 September 2012	27.1 °C	1,639 mm	273
2011	34.6 °C18 September 2011	19.8 °C23 July 2011	26.9 °C	2,107 mm	277
2010	35.9 °C12 February 2010	22.2 °C10 September 2010	27.3 °C	2,432 mm	276
2009	37.0 °C26 October 2009	22.2 °C25 June 2009	27.9 °C	1,155 mm	316
2008	35.8 °C8 April 2008	21.9 °C16 July 2008	26.9 °C	1,934 mm	261
2007	36.3 °C23 March 2007	21.8 °C11 July 2007	27.3 °C	1,851 mm	265
2006	36.8 °C10 April 2006	22.0 °C17 June 2006	27.2 °C	1,821 mm	273
2005	37.3 °C15 March 2005	22.1 °C10 July 2005	27.5 °C	1,947 mm	282
2004	36.7 °C18 November 2004	21.8 °C28 July 2004	27.7 °C	1,546 mm	275
2003	37.7 °C20 March 2003	21.9 °C17 July 2003	27.5 °C	1,713 mm	264
2002	37.1 °C8 March 2002	22.1 °C15 June 2002	27.7 °C	1,592 mm	293
2001	36.5 °C21 April 2001	21.4 °C22 June 2001	27.4 °C	1,339 mm	275
2000	34.8 °C7 March 2000	20.6 °C10 August 2000	26.7 °C	1,771 mm	253
1999	35.1 °C14 February 1999	21.3 °C18 July 1999	26.7 °C	1,905 mm	251
1998	38.6 °C10 February 1998	21.9 °C5 September 1998	28.0 °C	1,921 mm	291
1997	39.2 °C14 October 1997	21.0 °C9 May 1997	28.1 °C	1,264 mm	314
1996	35.9 °C16 April 1996	21.6 °C2 July 1996	27.2 °C	1,808 mm	271
1995	35.3 °C9 April 1995	21.7 °C16 October 1995	27.2 °C	1,778 mm	275
1994	34.9 °C15 April 1994	20.9 °C29 June 1994	26.9 °C	1,546 mm	254
1993	35.1 °C5 April 1993	20.9 °C26 July 1993	26.8 °C	1,773 mm	251
1992	36.3 °C3 November 1992	20.9 °C11 July 1992	27.4 °C	1,232 mm	294
1991	35.9 °C25 November 1991	21.0 °C5 August 1991	27.1 °C	1,605 mm	257
1990	34.3 °C15 October 1990	20.4 °C13 August 1990	26.8 °C	1,778 mm	256
1989	33.9 °C14 September 1989	20.5 °C8 January 1989	26.4 °C	1,595 mm	222
1988	35.9 °C31 March 1988	21.5 °C14 July 1988	27.0 °C	1,644 mm	246
1987	35.6 °C9 March 1987	22.2 °C19 October 1987	27.2 °C	1,447 mm	280
1986	34.8 °C24 April 1986	21.0 °C2 June 1986	26.7 °C	1,549 mm	252
1985	35.3 °C4 April 1985	20.7 °C31 August 1985	26.5 °C	1,644 mm	233
1984	36.1 °C9 April 1984	20.7 °C4 May 1984	26.5 °C	1,838 mm	233
1983	35.8 °C16 February 1983	21.1 °C6 June 1983	27.3 °C	1,437 mm	300
1982	34.7 °C24 November 1982	21.1 °C19 July 1982	26.7 °C	1,625 mm	264
1981	34.8 °C20 January 1981	20.5 °C22 July 1981	26.3 °C	1,908 mm	222
1980	35.4 °C23 March 1980	21.4 °C19 October 1980	26.6 °C	1,568 mm	266
1979	35.0 °C17 February 1979	21.0 °C17 August 1979	26.6 °C	2,034 mm	248
1978	36.1 °C14 March 1978	20.1 °C16 August 1978	26.5 °C	1,894 mm	248
1977	35.0 °C7 February 1977	21.0 °C4 April 1977	26.7 °C	1,860 mm	268
1976	34.9 °C13 October 1976	20.2 °C12 August 1976	26.1 °C	1,840 mm	219
1975	34.9 °C9 March 1975	19.2 °C21 July 1975	26.2 °C	1,931 mm	225
1974	34.4 °C21 February 1974	20.8 °C27 June 1974	25.9 °C	1,662 mm	207
1973	36.3 °C7 March 1973	20.6 °C2 June 1973	26.7 °C	2,038 mm	227
1972	34.8 °C14 October 1972	20.9 °C12 September 1972	26.5 °C	1,740 mm	260
1971	34.7 °C13 March 1971	19.8 °C11 September 1971	26.3 °C	1,487 mm	231
1970	36.6 °C3 March 1970	21.5 °C28 June 1970	26.5 °C	1,727 mm	236
1969	35.1 °C12 February 1969	21.3 °C13 July 1969	26.6 °C	1,873 mm	249
1968	35.8 °C22 February 1968	20.7 °C10 July 1968	26.6 °C	1,765 mm	253
1967	36.6 °C6 March 1967	21.0 °C17 July 1967	26.9 °C	1,485 mm	253
1966	37.5 °C16 March 1966	21.6 °C5 July 1966	27.3 °C	1,268 mm	273
1965	36.4 °C6 April 1965	20.5 °C4 January 1965	27.2 °C	1,229 mm	278
1964	38.3 °C31 March 1964	20.9 °C26 December 1964	27.5 °C	1,452 mm	267
1963	36.6 °C24 March 1963	21.0 °C6 March 1963	27.2 °C	1,521 mm	276
1962	35.4 °C18 March 1962	20.9 °C10 May 1962	26.6 °C	1,827 mm	250
1961	37.3 °C17 March 1961	21.2 °C21 June 1961	26.8 °C	1,402 mm	260
1960	36.6 °C24 March 1960	21.1 °C28 July 1960	26.5 °C	1,765 mm	231
1959	35.9 °C1 March 1959	20.8 °C4 August 1959	26.7 °C	1,629 mm	245
1958	36.1 °C17 January 1958	21.3 °C15 July 1958	26.9 °C	1,574 mm	247
1957	35.9 °C16 April 1957	21.3 °C24 July 1957	27.3 °C	1,354 mm	254
1956	33.6 °C8 March 1956	20.9 °C15 July 1956	25.3 °C	2,023 mm	109
1955	34.0 °C16 February 1955	20.0 °C2 August 1955	25.6 °C	1,814 mm	144
1954	36.2 °C23 March 1954	20.9 °C20 July 1954	26.1 °C	1,701 mm	159
1953	35.6 °C20 February 1953	21.0 °C14 July 1953	26.9 °C	1,534 mm	233
1952	37.0 °C8 March 1952	21.7 °C22 July 1952	26.8 °C	1,386 mm	220
1951	34.4 °C20 October 1951	21.2 °C16 July 1951	26.2 °C	1,491 mm	186
1950	34.9 °C18 April 1950	21.2 °C13 September 1950	26.0 °C	1,690 mm	173
1949	31.7 °C14 April 1949	20.6 °C6 January 1949	25.2 °C	1,761 mm	73
1948	35.2 °C11 March 1948	20.9 °C4 August 1948	25.7 °C	1,989 mm	146
1947	36.1 °C1 April 1947	21.1 °C18 December 1947	26.4 °C	1,407 mm	196
1946	33.7 °C5 March 1946	20.8 °C15 August 1946	25.5 °C	1,956 mm	122
1945	35.8 °C30 September 1945	20.7 °C18 July 1945	26.3 °C	1,684 mm	213
1944	35.0 °C25 October 1944	21.2 °C12 July 1944	26.2 °C	1,652 mm	196
1943	31.7 °C9 October 1943	19.6 °C27 January 1943	24.6 °C	2,750 mm	52
1942	35.2 °C15 March 1942	20.7 °C20 July 1942	25.6 °C	2,021 mm	122
1941	37.5 °C12 April 1941	21.3 °C13 September 1941	27.0 °C	1,279 mm	225
1940	37.2 °C2 March 1940	20.5 °C21 August 1940	27.0 °C	1,193 mm	219

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

31.9 °C

+0.8 °C

Hot days (≥ 30 °C)

294 d/yr

+48

Frost days (< 0 °C)

0 d/yr

Annual rainfall

1717 mm

+31 mm

Month by month

	High	vs. normal	Precipitation	vs. normal
Jan	33.3 °C	+1.2 °C	42 mm	+2 mm
Feb	32.3 °C	-0.4 °C	31 mm	-6 mm
Mar	32.4 °C	-0.6 °C	131 mm	+62 mm
Apr	31.1 °C	-0.3 °C	219 mm	+23 mm
May	29.7 °C	+0.3 °C	445 mm	+111 mm
Jun	30.0 °C	+1.1 °C	232 mm	-73 mm
Jul	29.7 °C	+0.7 °C	255 mm	+15 mm
Aug	31.7 °C	+1.6 °C	77 mm	-72 mm
Sep	34.4 °C	+2.9 °C	20 mm	-68 mm
Oct	33.1 °C	+0.9 °C	116 mm	+39 mm
Nov	33.0 °C	+1.2 °C	90 mm	0 mm
Dec	31.9 °C	+0.3 °C	60 mm	-1 mm

The year's extremes

Hottest day

36.0 °C

23 Sep 2025

Coldest day

21.9 °C

5 Jul 2025

Wettest day

59.0 mm

3 Jul 2025

Windiest day

23.4 km/h

14 Dec 2025

Strongest gust

50.4 km/h

14 Dec 2025

Hottest feels-like

42.1 °C

12 Sep 2025

Coldest feels-like

24.9 °C

14 Jan 2025

Sunniest day

12.0 h

11 Apr 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 Boa Vista?

Boa Vista has a tropical monsoon climate (Köppen Am). Over 1940-2025, the average annual temperature is 26.9 °C and it receives 1,686 mm of precipitation per year.

What is the hottest day ever recorded in Boa Vista?

The hottest day measured in Boa Vista between 1940 and 2025 was 14 October 1997, reaching 39.2 °C.

What is the coldest day in Boa Vista?

The coldest day measured in Boa Vista between 1940 and 2025 was 21 July 1975, at 19.2 °C.

Does it snow in Boa Vista?

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

Has the climate of Boa Vista warmed?

Yes: Boa Vista warmed by +1.8 °C between 1940 and 2025, a statistically significant trend.

What is the wettest day in Boa Vista?

The wettest day measured in Boa Vista between 1940 and 2025 was 5 April 1958, with 182 mm of rain in 24 hours.

What was the windiest day in Boa Vista?

The windiest day measured in Boa Vista between 1940 and 2025 was 20 January 2003, with winds reaching 25.7 km/h.

What is the warmest month in Boa Vista?

The warmest month in Boa Vista is March (28.4 °C on average); the coldest is July (25.2 °C).

How much does it rain in Boa Vista?

Boa Vista receives on average 1,686 mm of precipitation per year, spread over about 201 rainy days.

Is it sunny in Boa Vista?

Boa Vista gets on average 10.3 hours of sunshine per day, roughly 3,760 hours per year over 1940-2025.

Are there tropical nights in Boa Vista?

Yes: Boa Vista has on average 364 tropical nights per year (temperature staying above 20 °C), over 1940-2025.

What was the most extreme apparent temperature in Boa Vista?

In Boa Vista, between 1940 and 2025, the highest apparent temperature reached 44.7 °C on 14 October 1997, and the lowest was 20.7 °C on 6 March 1963.

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