Bonao weather in January

In January, Bonao sees average daytime highs of 23°C and overnight lows near 15°C, with 75 mm of rain across 14.1 wet days and about 11 hours of daylight. It is the 12th-warmest and 10th-wettest month of the year here.

Day-to-day highs hold fairly steady near 23°C through the month. The sky is clear or mostly clear about 42% of the time in January, and the air most often feels humid.

Daylight stretches from about 10 h 54 min at the start of January to 11 h 06 min by month's end. Set against the rest of the year, January is Bonao's 2nd-clearest and 9th-windiest month. For the whole year in context, see Bonao's year-round climate.

Daytime high
23°
12th warmest
Overnight low
15°
2nd coldest
Rainfall
75 mm
14.1 wet days
Daylight
11 hours
7:22 AM – 6:20 PM
Cloud cover
46%
2nd clearest
Wind
5 km/h
9th windiest
Solar energy
4.15 kWh/m²
Travel score
6.5
out of 10

Temperature in January

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 23°C through the month.

A typical January day in Bonao reaches about 23°C in the afternoon and slips back to 15°C overnight — a 8°C spread between the day's warmth and the night's chill. On most days the high lands between 21°C and 25°C. Set against its neighbours, January runs on par with December and on par with February.

10°15°20°25°30°151015202531
Avg high (°C)Avg low (°C)
12316
22316
32316
42316
52316
62316
72316
82315
92315
102315
112315
122315
132315
142315
152315
162315
172315
182315
192315
202315
212315
222315
232315
242315
252315
262315
272315
282315
292315
302315
312315

Bonao weather by month

How January compares with the rest of the year at a glance. January is the 12th-warmest and 10th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan23° / 15°7514.1116.5
Feb23° / 15°7012.711.46.5
Mar24° / 16°11515.411.96.3
Apr25° / 17°17019.512.45.5
May26° / 18°25323.212.94.7
Jun27° / 19°13219.913.15.0
Jul27° / 19°10521135.0
Aug27° / 19°12521.812.64.8
Sep27° / 19°14921.912.14.7
Oct26° / 19°13320.311.65.1
Nov25° / 17°11517.411.15.7
Dec24° / 16°7313.510.96.6

Cloud cover in January

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 42% of the time in January.

Beyond those clear spells, partly cloudy skies cover about 30% of January, with mostly cloudy or overcast conditions the remaining 28%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
17129
27129
37129
47030
57030
67030
77030
87030
97129
107129
117030
127030
137129
147129
157228
167228
177228
187327
197327
207327
217327
227327
237327
247426
257426
267426
277525
287525
297525
307624
317624

Chance of precipitation in January

Any precipitation

Bonao gets around 75 mm of rain over 14.1 wet days in January. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 45% and peaks near 50% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%151015202531
Rain chance (%)
148
249
349
450
550
650
750
850
950
1049
1149
1248
1347
1447
1546
1645
1744
1844
1943
2043
2142
2242
2342
2441
2541
2640
2740
2840
2940
3040
3141

Humidity in January

DryComfortableHumidMuggyOppressiveMiserable

Most of January feels humid — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, January lands in the humid band about 69% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)
1116758
2116767
3117757
4118747
5118756
6119746
7120745
8120745
9121735
10122734
11122734
12123724
13124714
14125713
15226693
16227683
17228673
18228673
19229663
20229672
21230662
22230662
23231652
24231652
25231652
26331642
27331642
28331642
29331642
30330661
31329671

Wind in January

Winds average 5 km/h in January.

Across January, daily wind ranges from about 5 km/h on the calmest days to 5 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (km/h)Feels
15calm
25calm
35calm
45calm
55calm
65calm
75calm
85calm
95calm
105calm
115calm
125calm
135calm
145calm
155calm
165calm
175calm
185calm
195calm
205calm
215calm
225calm
235calm
245calm
255calm
265calm
275calm
285calm
295calm
305calm
315calm

Sunrise & sunset in January

DaylightNight

Daylight runs from about 10 h 54 min at the start of January to 11 h 06 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 12 minutes over January. Sunrise moves from 7:18 AM to 7:21 AM, and sunset from 6:11 PM to 6:29 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
110.97:186:11
210.97:196:12
310.97:196:12
410.97:196:13
510.97:206:13
610.97:206:14
710.97:206:15
810.97:206:15
910.97:216:16
1010.97:216:16
1110.97:216:17
1210.97:216:18
1310.97:216:18
1411.07:216:19
1511.07:226:20
1611.07:226:20
1711.07:226:21
1811.07:226:21
1911.07:226:22
2011.07:226:23
2111.07:226:23
2211.07:226:24
2311.07:226:24
2411.17:226:25
2511.17:226:26
2611.17:226:26
2711.17:216:27
2811.17:216:27
2911.17:216:28
3011.17:216:29
3111.17:216:29

Solar energy in January

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in January, about 4.15 kWh/m².

For context, solar energy here swings from a low near 3.95 kWh/m² to a high of 6.16 kWh/m² in July across the year — January's 4.15 kWh/m² sits near the bottom.

012345151015202531
Solar energy (kWh/m²)Level
14.0Moderate
24.0Moderate
34.0Moderate
44.0Moderate
54.0Moderate
64.0Moderate
74.0Bright
84.0Bright
94.0Bright
104.0Bright
114.1Bright
124.1Bright
134.1Bright
144.1Bright
154.1Bright
164.2Bright
174.2Bright
184.2Bright
194.2Bright
204.2Bright
214.3Bright
224.3Bright
234.3Bright
244.3Bright
254.3Bright
264.3Bright
274.3Bright
284.4Bright
294.4Bright
304.4Bright
314.4Bright
Planning a trip in January

Is January a good time to visit Bonao?

Our two travel scores rate January for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).

6.5
Sightseeing
2nd-best month of the year
5.0
Beach & pool
5th-best month of the year

January is a reasonable time to visit Bonao for sightseeing.

What to pack for Bonao in January

From January's temperature range, rain chance, sun and wind — what's worth putting in the bag.

In January, Bonao sees daytime highs around 23°C and nights near 15°C. Pack rain gear. Worth having: light clothes. About 14 days see rain.

rain gearlight clothes

Sea temperature near Bonao in January

The nearest coast averages about 27°C in January — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 67 km away) is warmest in September at about 29°C and coldest in February near 27°C.

The water stays above 20°C all year — warm enough for a swim any month.

26°28°30°JanFebMarAprMayJunJulAugSepOctNovDecwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan27Warm
Feb27Warm
Mar27Warm
Apr27Warm
May28Warm
Jun28Tropical
Jul29Tropical
Aug29Tropical
Sep29Tropical
Oct29Tropical
Nov29Tropical
Dec28Warm

UV index in Bonao in January

LowModerateHighVery highExtreme

Clear-sky midday UV in January peaks around 8 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Bonao peaks around March 22 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 15 at about 7 (very high).

The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecVery highExtremeVery highMar 22UV 13Dec 15UV 7
UV index (midday)Level
Jan8Very high
Feb11Extreme
Mar13Extreme
Apr13Extreme
May12Extreme
Jun12Extreme
Jul12Extreme
Aug13Extreme
Sep12Extreme
Oct10Extreme
Nov8Very high
Dec7High

Air quality in Bonao in January

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where January falls, not just the annual average.

Air quality in Bonao is worst in June — around 31 µg/m³ PM2.5 (moderate), about 1.9× the cleanest month (February, 17 µg/m³).

Modeled monthly averages (CAMS reanalysis, 2015–2024).

010203040JanFebMarAprMayJunJulAugSepOctNovDecModerateJun 2131 µg/m³Feb 1417 µg/m³
PM2.5 (µg/m³)Level
Jan18Moderate
Feb17Moderate
Mar18Moderate
Apr18Moderate
May23Moderate
Jun31Moderate
Jul29Moderate
Aug26Moderate
Sep25Moderate
Oct26Moderate
Nov21Moderate
Dec18Moderate
Location & terrain

Where is Bonao?

Bonao sits at 18.9°N, 70.4°W, 166 m above sea level, in Dominican Republic. The nearest listed city is Cotuí, 30 km away.

CotuíJarabacoaLa VegaConstanzaVilla AltagraciaSan Francisco de MacorísSan José de OcoaSalcedo

Topography around Bonao

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Bonao.

Within 3 km, the terrain around Bonao has only modest variations in elevation — a maximum elevation change of 169 m around an average of 179 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,677 m; within 80 km, extreme variations in elevation — a maximum elevation change of 3,072 m.

The land around Bonao is covered by trees (50%) and artificial surfaces (30%) within 3 km, trees (80%) within 16 km, and trees (68%) within 80 km.

3 km
169 m
16 km
1,677 m
80 km
3,072 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwater
January weather nearby: Cotuí 30 km · Jarabacoa 31 km · La Vega 33 km · Constanza 35 km · Villa Altagracia 39 km · San Francisco de Macorís 43 km · San José de Ocoa 45 km · Salcedo 49 km

Dominican Republic travel facts

Travel advisory
Level 2
Exercise Increased Caution
Power plugs
Type A / B / C
120 V · 60 Hz
Prices
≈ 39% of US
price level, 2025
GDP per capita
$11,059
2025
Happiness
6.1 / 10
World Happiness, 2025
Safe drinking water
45%
of population, 2024
Homicide rate
10.9
per 100k, 2023
Road deaths
64.6
per 100k/yr, 2019
Income group
Upper middle
World Bank
English
Moderate
EF EPI 503

Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.

Data sources

Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Bonao (18.9415°, -70.4111°, elevation 166 m), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google. Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).