Bonao climate — normals and trends

Q: What is the climate of Bonao?

Bonao has a tropical rainforest climate (Köppen Af). Over 1940-2025, the average annual temperature is 20.6 °C and it receives 1,573 mm of precipitation per year.

Q: What is the hottest day ever recorded in Bonao?

The hottest day measured in Bonao between 1940 and 2025 was 3 October 2015, reaching 32.1 °C.

Q: What is the coldest day in Bonao?

The coldest day measured in Bonao between 1940 and 2025 was 12 January 1941, at 9.3 °C.

Q: Does it snow in Bonao?

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

Q: Has the climate of Bonao warmed?

Yes: Bonao warmed by +1.4 °C between 1940 and 2025, a statistically significant trend.

Q: What is the wettest day in Bonao?

The wettest day measured in Bonao between 1940 and 2025 was 22 September 1998, with 178 mm of rain in 24 hours.

Q: What was the windiest day in Bonao?

The windiest day measured in Bonao between 1940 and 2025 was 22 September 1998, with winds reaching 38.1 km/h.

Q: What is the warmest month in Bonao?

The warmest month in Bonao is August (22.1 °C on average); the coldest is January (18.4 °C).

Q: How much does it rain in Bonao?

Bonao receives on average 1,573 mm of precipitation per year, spread over about 233 rainy days.

Q: Is it sunny in Bonao?

Bonao gets on average 10.8 hours of sunshine per day, roughly 3,942 hours per year over 1940-2025.

Bonao (Dominican Republic) has a tropical rainforest climate (Af) under the Köppen-Geiger classification. Its mean annual temperature is 20.6 °C and it receives 1,573 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 August (22.1 °C on average) and the coldest is January (18.4 °C). Rainfall peaks in May.

Bonao averages 0 frost days, 0 hot days (≥ 30 °C) and 233 rainy days per year.

Bonao has warmed by +1.4 °C between 1940 and 2025, or +0.16 °C per decade. This trend is statistically significant.

The hottest day of the period reached 32.1 °C (on 3 October 2015) and the coldest 9.3 °C (on 12 January 1941).

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

BonaoMonseñor Nouel

coords: 18.94°, -70.41°
period: 1940–2025 · 86 yrs

AfTropical rainforestWarmest monthAugustColdest monthJanuaryWettest monthMayDriest monthJanuary

Mean daily temperature

20.6°C

Average daily high

24.8°C

Average daily low

17.2°C

Annual rainfall

1,573mm

Sunshine / day

10.8h

Mean relative humidity

85%

Average peak wind

10.4km/h

Seasonal range

3.7°C

Frost days (< 0 °C)

0 d/yr

Hot days (≥ 30 °C)

0 d/yr

Rainy days (≥ 1 mm)

233 d/yr

Annual snowfall

0.0 cm

Average feels-like high

27.6 °C

Average feels-like low

18.9 °C

Average peak gust

34.2 km/h

Tropical nights (≥ 20 °C)

14 d/yr

Solar radiation

18.7 MJ/m²

Has the climate changed?

One stripe per year, 1940 to 2025

+1.4 °C

since 1940

+0.2 °C per decade · r² = 0.62 · 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

32.1 °C

3 October 2015

Coldest day

9.3 °C

12 January 1941

Wettest day

178 mm

22 September 1998

Windiest day

38.1 km/h

22 September 1998

Strongest gust

131.0 km/h

22 September 1998

Hottest feels-like

37.5 °C

5 June 2023

Coldest feels-like

6.9 °C

12 January 1941

Sunniest day

12.9 h

22 May 1940

Year	Hottest day	Coldest day	Annual mean	Rainfall	Hot days
2025	31.3 °C19 August 2025	12.1 °C26 December 2025	21.7 °C	1,382 mm	6
2024	30.2 °C15 August 2024	12.1 °C10 February 2024	22.2 °C	1,816 mm	2
2023	31.5 °C5 June 2023	10.0 °C18 January 2023	22.0 °C	1,294 mm	13
2022	29.7 °C21 September 2022	11.7 °C3 January 2022	21.1 °C	1,229 mm	0
2021	29.3 °C4 September 2021	11.9 °C5 January 2021	21.0 °C	1,289 mm	0
2020	29.5 °C14 July 2020	12.7 °C16 December 2020	21.5 °C	1,453 mm	0
2019	29.4 °C10 August 2019	12.6 °C9 January 2019	21.5 °C	1,075 mm	0
2018	28.6 °C8 August 2018	12.7 °C5 March 2018	21.0 °C	1,190 mm	0
2017	29.5 °C22 September 2017	11.0 °C19 January 2017	21.2 °C	1,891 mm	0
2016	29.3 °C6 October 2016	11.5 °C5 February 2016	21.3 °C	1,769 mm	0
2015	32.1 °C3 October 2015	13.3 °C21 January 2015	21.4 °C	1,188 mm	3
2014	29.7 °C26 August 2014	12.9 °C5 March 2014	21.2 °C	964 mm	0
2013	28.9 °C4 August 2013	10.9 °C13 February 2013	20.8 °C	1,388 mm	0
2012	28.7 °C15 October 2012	11.8 °C25 January 2012	20.8 °C	1,837 mm	0
2011	28.9 °C14 September 2011	11.4 °C24 March 2011	20.7 °C	1,683 mm	0
2010	31.1 °C7 October 2010	10.6 °C9 March 2010	21.3 °C	1,959 mm	2
2009	28.9 °C27 September 2009	11.1 °C2 January 2009	20.8 °C	1,615 mm	0
2008	29.9 °C5 September 2008	9.4 °C14 January 2008	20.6 °C	1,507 mm	0
2007	29.5 °C23 June 2007	12.3 °C21 January 2007	21.0 °C	1,940 mm	0
2006	28.7 °C30 September 2006	10.5 °C10 March 2006	20.9 °C	1,548 mm	0
2005	29.6 °C10 March 2005	10.5 °C22 February 2005	21.1 °C	1,948 mm	0
2004	28.9 °C20 September 2004	10.1 °C26 January 2004	20.5 °C	1,563 mm	0
2003	28.9 °C16 September 2003	12.0 °C30 December 2003	20.9 °C	1,545 mm	0
2002	28.8 °C16 June 2002	11.3 °C21 February 2002	20.8 °C	1,167 mm	0
2001	29.3 °C30 September 2001	10.8 °C28 February 2001	20.7 °C	1,297 mm	0
2000	29.1 °C10 August 2000	9.6 °C18 January 2000	20.4 °C	1,279 mm	0
1999	29.5 °C14 September 1999	10.4 °C17 February 1999	20.2 °C	1,704 mm	0
1998	29.6 °C23 August 1998	11.2 °C15 April 1998	20.9 °C	1,950 mm	0
1997	31.1 °C7 September 1997	11.1 °C7 April 1997	21.1 °C	969 mm	2
1996	28.8 °C30 August 1996	10.3 °C13 April 1996	20.1 °C	1,776 mm	0
1995	30.3 °C18 September 1995	12.3 °C15 March 1995	20.7 °C	1,215 mm	2
1994	29.9 °C21 June 1994	13.1 °C14 April 1994	20.7 °C	1,150 mm	0
1993	29.7 °C2 June 1993	10.9 °C22 February 1993	20.6 °C	1,817 mm	0
1992	28.2 °C30 July 1992	12.0 °C19 January 1992	20.5 °C	1,781 mm	0
1991	29.1 °C3 September 1991	10.6 °C23 December 1991	20.5 °C	1,212 mm	0
1990	29.9 °C29 May 1990	12.5 °C18 December 1990	20.5 °C	1,595 mm	0
1989	29.5 °C20 September 1989	11.3 °C27 March 1989	20.4 °C	1,293 mm	0
1988	29.2 °C4 June 1988	11.5 °C2 April 1988	20.6 °C	1,853 mm	0
1987	28.1 °C26 April 1987	11.8 °C30 January 1987	21.1 °C	2,100 mm	0
1986	27.0 °C12 September 1986	11.3 °C24 December 1986	20.4 °C	1,773 mm	0
1985	28.4 °C25 September 1985	11.5 °C29 March 1985	20.3 °C	1,430 mm	0
1984	29.3 °C29 March 1984	11.7 °C20 December 1984	20.4 °C	1,561 mm	0
1983	28.9 °C17 March 1983	12.5 °C6 February 1983	21.0 °C	1,775 mm	0
1982	27.7 °C15 September 1982	11.0 °C25 February 1982	20.2 °C	1,636 mm	0
1981	28.5 °C10 September 1981	11.7 °C31 March 1981	20.6 °C	2,104 mm	0
1980	28.4 °C11 October 1980	12.2 °C21 January 1980	21.0 °C	1,584 mm	0
1979	28.4 °C15 June 1979	11.7 °C11 January 1979	20.5 °C	2,280 mm	0
1978	28.7 °C20 October 1978	12.7 °C14 February 1978	20.8 °C	1,745 mm	0
1977	27.7 °C27 September 1977	12.9 °C29 March 1977	21.0 °C	1,591 mm	0
1976	28.7 °C25 August 1976	12.0 °C3 January 1976	20.4 °C	1,165 mm	0
1975	27.8 °C8 June 1975	12.0 °C6 February 1975	20.4 °C	1,218 mm	0
1974	27.6 °C24 June 1974	12.8 °C30 April 1974	20.3 °C	2,010 mm	0
1973	28.4 °C8 April 1973	12.7 °C29 December 1973	20.8 °C	1,514 mm	0
1972	29.0 °C22 June 1972	12.3 °C13 March 1972	20.6 °C	1,575 mm	0
1971	28.2 °C7 September 1971	11.9 °C22 January 1971	20.3 °C	1,431 mm	0
1970	28.4 °C18 July 1970	10.9 °C4 March 1970	20.5 °C	1,706 mm	0
1969	28.9 °C9 June 1969	12.6 °C21 February 1969	21.1 °C	1,673 mm	0
1968	27.7 °C19 May 1968	10.7 °C4 February 1968	20.1 °C	1,243 mm	0
1967	28.5 °C3 September 1967	11.1 °C17 March 1967	20.0 °C	1,056 mm	0
1966	30.0 °C29 August 1966	11.6 °C11 February 1966	20.2 °C	1,417 mm	1
1965	29.1 °C24 October 1965	10.6 °C4 January 1965	19.9 °C	1,401 mm	0
1964	28.9 °C22 March 1964	10.9 °C25 January 1964	20.2 °C	1,381 mm	0
1963	28.8 °C9 September 1963	12.3 °C24 January 1963	20.1 °C	2,024 mm	0
1962	29.1 °C8 August 1962	11.1 °C16 February 1962	20.1 °C	1,353 mm	0
1961	28.0 °C19 June 1961	11.2 °C29 March 1961	19.9 °C	1,826 mm	0
1960	28.8 °C12 June 1960	12.5 °C7 December 1960	20.3 °C	1,878 mm	0
1959	28.9 °C30 June 1959	12.7 °C9 January 1959	20.4 °C	1,284 mm	0
1958	29.9 °C7 October 1958	10.6 °C5 February 1958	20.9 °C	1,665 mm	0
1957	29.3 °C24 July 1957	11.4 °C12 February 1957	20.4 °C	1,326 mm	0
1956	28.5 °C3 November 1956	9.3 °C11 January 1956	19.8 °C	1,601 mm	0
1955	29.1 °C8 August 1955	11.0 °C22 January 1955	19.7 °C	1,812 mm	0
1954	27.2 °C8 September 1954	11.0 °C30 January 1954	19.7 °C	1,800 mm	0
1953	28.2 °C10 September 1953	11.3 °C3 January 1953	20.1 °C	1,550 mm	0
1952	28.5 °C13 May 1952	10.7 °C18 January 1952	20.2 °C	1,560 mm	0
1951	30.4 °C8 September 1951	10.2 °C21 February 1951	20.2 °C	1,693 mm	1
1950	28.4 °C31 May 1950	11.6 °C12 February 1950	19.6 °C	1,802 mm	0
1949	28.4 °C12 October 1949	11.8 °C12 January 1949	20.0 °C	1,410 mm	0
1948	28.6 °C3 June 1948	10.6 °C27 February 1948	20.1 °C	1,865 mm	0
1947	28.5 °C23 July 1947	12.5 °C10 January 1947	20.6 °C	1,404 mm	0
1946	29.2 °C3 June 1946	11.8 °C6 February 1946	20.0 °C	1,403 mm	0
1945	27.6 °C11 September 1945	11.1 °C28 March 1945	19.9 °C	1,656 mm	0
1944	28.4 °C8 August 1944	9.6 °C7 February 1944	20.2 °C	1,412 mm	0
1943	29.1 °C25 September 1943	11.7 °C11 January 1943	19.9 °C	1,698 mm	0
1942	28.3 °C2 October 1942	10.9 °C5 February 1942	20.0 °C	2,094 mm	0
1941	27.7 °C28 July 1941	9.3 °C12 January 1941	20.1 °C	1,663 mm	0
1940	30.3 °C13 September 1940	11.9 °C4 March 1940	20.1 °C	2,019 mm	1

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

26.1 °C

+1.3 °C

Hot days (≥ 30 °C)

6 d/yr

Frost days (< 0 °C)

0 d/yr

Annual rainfall

1382 mm

-191 mm

Month by month

	High	vs. normal	Precipitation	vs. normal
Jan	24.3 °C	+1.6 °C	37 mm	-34 mm
Feb	23.9 °C	+0.9 °C	51 mm	-30 mm
Mar	25.3 °C	+1.5 °C	75 mm	-38 mm
Apr	24.8 °C	+0.4 °C	257 mm	+74 mm
May	26.3 °C	+1.1 °C	226 mm	-42 mm
Jun	26.5 °C	+0.4 °C	82 mm	-55 mm
Jul	27.0 °C	+0.9 °C	77 mm	-35 mm
Aug	28.5 °C	+2.0 °C	76 mm	-49 mm
Sep	28.3 °C	+1.7 °C	164 mm	+18 mm
Oct	27.1 °C	+1.0 °C	263 mm	+112 mm
Nov	26.1 °C	+1.6 °C	53 mm	-53 mm
Dec	25.2 °C	+2.0 °C	21 mm	-58 mm

The year's extremes

Hottest day

31.3 °C

19 Aug 2025

Coldest day

12.1 °C

26 Dec 2025

Wettest day

46.7 mm

16 Apr 2025

Windiest day

17.7 km/h

29 Oct 2025

Strongest gust

59.4 km/h

29 Oct 2025

Hottest feels-like

35.5 °C

19 Aug 2025

Coldest feels-like

11.8 °C

26 Dec 2025

Sunniest day

12.9 h

22 May 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 Bonao?

Bonao has a tropical rainforest climate (Köppen Af). Over 1940-2025, the average annual temperature is 20.6 °C and it receives 1,573 mm of precipitation per year.

What is the hottest day ever recorded in Bonao?

The hottest day measured in Bonao between 1940 and 2025 was 3 October 2015, reaching 32.1 °C.

What is the coldest day in Bonao?

The coldest day measured in Bonao between 1940 and 2025 was 12 January 1941, at 9.3 °C.

Does it snow in Bonao?

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

Has the climate of Bonao warmed?

Yes: Bonao warmed by +1.4 °C between 1940 and 2025, a statistically significant trend.

What is the wettest day in Bonao?

The wettest day measured in Bonao between 1940 and 2025 was 22 September 1998, with 178 mm of rain in 24 hours.

What was the windiest day in Bonao?

The windiest day measured in Bonao between 1940 and 2025 was 22 September 1998, with winds reaching 38.1 km/h.

What is the warmest month in Bonao?

The warmest month in Bonao is August (22.1 °C on average); the coldest is January (18.4 °C).

How much does it rain in Bonao?

Bonao receives on average 1,573 mm of precipitation per year, spread over about 233 rainy days.

Is it sunny in Bonao?

Bonao gets on average 10.8 hours of sunshine per day, roughly 3,942 hours per year over 1940-2025.

Are there tropical nights in Bonao?

Yes: Bonao has on average 14 tropical nights per year (temperature staying above 20 °C), over 1940-2025.

What was the most extreme apparent temperature in Bonao?

In Bonao, between 1940 and 2025, the highest apparent temperature reached 37.5 °C on 5 June 2023, and the lowest was 6.9 °C on 12 January 1941.

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