Boriziny weather in December

In December, Boriziny sees average daytime highs of 34°C and overnight lows near 24°C, with 256 mm of rain across 22.4 wet days and about 12.9 hours of daylight. It is the 4th-warmest and 3rd-wettest month of the year here.

Highs ease over the month, from about 34°C in the first days to 33°C by the end. The sky is clear or mostly clear about 24% of the time in December, and the air most often feels oppressive.

Daylight stretches from about 12 h 54 min at the start of December to 12 h 54 min by month's end. Set against the rest of the year, December is Boriziny's 10th-clearest and 10th-windiest month. For the whole year in context, see Boriziny's year-round climate.

Daytime high
34°
4th warmest
Overnight low
24°
12th coldest
Rainfall
256 mm
22.4 wet days
Daylight
12 h 54 min
5:18 AM – 6:13 PM
Cloud cover
64%
10th clearest
Wind
8 km/h
10th windiest
Solar energy
6.43 kWh/m²
Travel score
2.3
out of 10

Temperature in December

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 34°C in the first days to 33°C by the end.

A typical December day in Boriziny reaches about 34°C in the afternoon and slips back to 24°C overnight — a 9°C spread between the day's warmth and the night's chill. On most days the high lands between 31°C and 36°C. Set against its neighbours, December runs about 2°C cooler than November and about 2°C warmer than January.

20°25°30°35°40°151015202531
Avg high (°C)Avg low (°C)
13424
23424
33424
43424
53424
63424
73424
83424
93424
103424
113424
123424
133424
143424
153424
163424
173324
183324
193324
203324
213324
223324
233324
243324
253324
263324
273324
283324
293324
303324
313224

How December really feels in Boriziny

Once humidity and wind are folded in, December averages 31 days that feel above 32°C and 0 that feel at or below 0°C — the comfort signal a plain temperature reading hides.

Days feeling ≥ 32°C
31
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

The story in December is heat — humidity pushes the afternoon "feels like" well above the raw temperature.

Boriziny weather by month

How December compares with the rest of the year at a glance. December is the 4th-warmest and 3rd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan32° / 24°4722712.82.4
Feb32° / 24°34424.212.52.5
Mar33° / 24°21719.112.12.8
Apr34° / 24°366.511.73.6
May33° / 22°91.611.34.6
Jun31° / 21°20.411.15.7
Jul31° / 20°10.311.26.1
Aug32° / 20°20.311.55.6
Sep33° / 21°20.611.94.6
Oct35° / 23°214.312.43.2
Nov35° / 24°10212.112.72.4
Dec34° / 24°25622.412.92.3

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 24% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 18% of December, with mostly cloudy or overcast conditions the remaining 58%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15941
25842
35842
45743
55545
65545
75446
85248
95149
104852
114852
124654
134654
144357
154258
164159
174060
183862
193862
203763
213763
223664
233565
243367
253268
263070
272971
282773
292773
302476
312377

Chance of precipitation in December

Any precipitation

Boriziny gets around 256 mm of rain over 22.4 wet days in December. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 73% and peaks near 82% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%80%151015202531
Rain chance (%)
160
261
362
464
565
666
767
868
969
1070
1171
1272
1373
1474
1574
1675
1775
1875
1976
2076
2176
2276
2377
2477
2578
2679
2779
2880
2981
3082
3182

Humidity in December

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, December lands in the oppressive band about 57% of days. Sticky, muggy-or-worse air turns up on roughly 93% of them.

0%25%50%75%100%151015202531
Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
121330514
221230524
321130525
421129526
511029537
611028538
71928539
819275310
918275311
1018265312
1118255313
1217245414
1307235515
1406235516
1506225616
1606215617
1705215717
1805205817
1905205817
2004196017
2104196017
2204196017
2304186117
2403186217
2503176218
2603176218
2702166319
2802156320
2902156221
3002146321
3101136422

Wind in December

Winds average 8 km/h in December.

Across December, daily wind ranges from about 7 km/h on the calmest days to 9 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
19calm
29calm
39calm
49calm
58calm
68calm
78calm
88calm
98calm
108calm
118calm
128calm
138calm
148calm
158calm
168calm
178calm
187calm
197calm
207calm
217calm
227calm
237calm
247calm
257calm
267calm
277calm
287calm
297calm
307calm
317calm

Sunrise & sunset in December

DaylightNight

Daylight runs from about 12 h 54 min at the start of December to 12 h 54 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 0 minutes over December. Sunrise moves from 5:13 AM to 5:25 AM, and sunset from 6:05 PM to 6:20 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.95:136:05
212.95:146:05
312.95:146:06
412.95:146:06
512.95:146:07
612.95:156:08
712.95:156:08
812.95:156:09
912.95:156:09
1012.95:166:10
1112.95:166:10
1212.95:166:11
1312.95:176:11
1412.95:176:12
1512.95:186:13
1612.95:186:13
1712.95:186:14
1812.95:196:14
1912.95:196:15
2012.95:206:15
2112.95:206:16
2212.95:216:16
2312.95:216:16
2412.95:226:17
2512.95:226:17
2612.95:236:18
2712.95:236:18
2812.95:246:19
2912.95:246:19
3012.95:256:19
3112.95:256:20

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 6.43 kWh/m².

For context, solar energy here swings from a low near 4.69 kWh/m² to a high of 7.12 kWh/m² in October across the year — December's 6.43 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
16.8Intense
26.8Intense
36.8Intense
46.8Intense
56.8Intense
66.7Intense
76.7Intense
86.7Intense
96.7Intense
106.6Intense
116.6Intense
126.6Intense
136.5Intense
146.5Intense
156.5Intense
166.4Intense
176.4Intense
186.4Intense
196.3Intense
206.3Intense
216.2Intense
226.2Intense
236.1Intense
246.1Intense
256.0Intense
266.0Bright
275.9Bright
285.9Bright
295.8Bright
305.8Bright
315.7Bright
Planning a trip in December

Hazard calendar for Boriziny

In seasonPeak

In December, Boriziny sits inside its monsoon season. The full year is below, with each hazard's peak months called out.

Boriziny's monsoon runs December–March, when most of the year's rain falls.

Monsoon
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is December a good time to visit Boriziny?

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

2.3
Sightseeing
12th-best month of the year
4.4
Beach & pool
10th-best month of the year

December is a weaker month for outdoor sightseeing in Boriziny.

What to pack for Boriziny in December

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

In December, Boriziny sees daytime highs around 34°C and nights near 24°C. Pack light clothes, rain gear and sun protection. About 22 days see rain.

light clothesrain gearsun protection

UV index in Boriziny in December

LowModerateHighVery highExtreme

Clear-sky midday UV in December peaks around 14 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Boriziny peaks around February 10 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 19 at about 8 (very high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highExtremeFeb 10UV 15Jun 19UV 8
UV index (midday)Level
Jan15Extreme
Feb15Extreme
Mar14Extreme
Apr11Extreme
May9Very high
Jun8Very high
Jul8Very high
Aug10Very high
Sep12Extreme
Oct13Extreme
Nov12Extreme
Dec14Extreme

Air quality in Boriziny in December

GoodModeratePoorUnhealthyVery unhealthy

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

Air quality in Boriziny is worst in November — around 21 µg/m³ PM2.5 (moderate), about 5.3× the cleanest month (July, 4 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateNov 1620 µg/m³Jul 154 µg/m³
PM2.5 (µg/m³)Level
Jan6Good
Feb6Good
Mar6Good
Apr5Good
May5Good
Jun4Good
Jul4Good
Aug5Good
Sep6Good
Oct12Good
Nov21Moderate
Dec12Good
Location & terrain

Where is Boriziny?

Boriziny sits at 15.6°S, 47.7°E, 22 m above sea level, in Madagascar. The nearest listed city is Mampikony, 60 km away.

BefandrianaMarovoayTsaratananaAmbato BoenyMahajangaMaromandia

Topography around Boriziny

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

Within 3 km, the terrain around Boriziny has only modest variations in elevation — a maximum elevation change of 69 m around an average of 22 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 306 m; within 80 km, large variations in elevation — a maximum elevation change of 1,122 m.

The land around Boriziny is covered by cropland (49%) and grassland (33%) within 3 km, grassland (53%) and trees (24%) within 16 km, and grassland (61%) and trees (25%) within 80 km.

3 km
69 m
16 km
306 m
80 km
1,122 m
treesshrubsgrasslandcroplandwatermangroves
December weather nearby: Mampikony 60 km · Antsohihy 82 km · Befandriana 99 km · Marovoay 126 km · Tsaratanana 139 km · Ambato Boeny 144 km · Mahajanga 146 km · Maromandia 155 km

Madagascar travel facts

Travel advisory
Level 2
Exercise Increased Caution
Power plugs
Type C / E
220 V · 50 Hz
Prices
≈ 31% of US
price level, 2025
GDP per capita
$599
2025
Happiness
4.2 / 10
World Happiness, 2025
Safe drinking water
22%
of population, 2024
Road deaths
29.2
per 100k/yr, 2019
Income group
Low
World Bank
English
Low
EF EPI 457
Religion
Church of Jesus Christ in Madagascar/Malagasy Lutheran Church/Anglican Church 34%Roman Catholic 32%none 22%other Christian 8%

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 Boriziny (-15.55°, 47.6667°, elevation 22 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. 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).