Ihosy weather in December

In December, Ihosy sees average daytime highs of 29°C and overnight lows near 19°C, with 173 mm of rain across 16.4 wet days and about 13.3 hours of daylight. It is the 2nd-warmest and 2nd-wettest month of the year here.

Day-to-day highs hold fairly steady near 29°C through the month. The sky is clear or mostly clear about 23% of the time in December, and the air most often feels muggy.

Daylight stretches from about 13 h 18 min at the start of December to 13 h 24 min by month's end. Set against the rest of the year, December is Ihosy's 10th-clearest and 12th-windiest month. For the whole year in context, see Ihosy's year-round climate.

Daytime high
29°
2nd warmest
Overnight low
19°
10th coldest
Rainfall
173 mm
16.4 wet days
Daylight
13 h 24 min
5:11 AM – 6:33 PM
Cloud cover
59%
10th clearest
Wind
10 km/h
12th windiest
Solar energy
6.72 kWh/m²
Travel score
4.8
out of 10

Temperature in December

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 29°C through the month.

A typical December day in Ihosy reaches about 29°C in the afternoon and slips back to 19°C overnight — a 10°C spread between the day's warmth and the night's chill. On most days the high lands between 26°C and 31°C. Set against its neighbours, December runs on par with November and on par with January.

15°20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
12918
22918
32918
42919
52919
62919
72919
82919
92919
102919
112919
122919
132919
142919
152919
162919
172919
182919
192919
202919
212919
222919
232919
242919
252919
262919
272919
282919
292819
302819
312819

Ihosy weather by month

How December compares with the rest of the year at a glance. December is the 2nd-warmest and 2nd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan28° / 19°22518.313.24.7
Feb28° / 19°14514.712.85.3
Mar28° / 19°8911.912.26.1
Apr27° / 17°345.811.57.4
May25° / 15°122.510.98.5
Jun23° / 13°51.110.78.7
Jul22° / 12°71.210.88.5
Aug24° / 12°30.711.29.1
Sep26° / 14°51.311.98.7
Oct28° / 16°345.212.57.1
Nov29° / 18°76913.15.7
Dec29° / 19°17316.413.34.8

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 23% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 24% of December, with mostly cloudy or overcast conditions the remaining 52%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15644
25545
35446
45446
55248
65248
75050
84951
94852
104852
114753
124753
134654
144555
154555
164555
174555
184555
194555
204753
214753
224753
234654
244753
254753
264654
274654
284654
294357
304357
314357

Chance of precipitation in December

Any precipitation

Ihosy gets around 173 mm of rain over 16.4 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 53% and peaks near 57% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%151015202531
Rain chance (%)
143
244
345
446
547
648
749
850
951
1052
1153
1254
1354
1455
1555
1655
1755
1855
1955
2055
2155
2255
2355
2456
2556
2656
2757
2857
2957
3057
3157

Humidity in December

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, December lands in the muggy band about 56% of days. Sticky, muggy-or-worse air turns up on roughly 56% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
12954350
22952370
32950390
42849410
52848420
61847440
71745460
81744480
91742500
101741510
111640530
121638550
131637560
141636570
150635581
160535591
170534601
180534601
190534601
200534601
210434611
220433621
230433621
240333631
250332641
260332641
270231661
280230671
290230671
300229681
310228691

Wind in December

Winds average 10 km/h in December, the calmest month.

Across December, daily wind ranges from about 9 km/h on the calmest days to 10 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
110calm
210calm
310calm
410calm
510calm
610calm
710calm
810calm
910calm
109calm
119calm
129calm
139calm
149calm
159calm
169calm
179calm
189calm
199calm
209calm
2110calm
2210calm
2310calm
2410calm
2510calm
2610calm
2710calm
2810calm
2910calm
3010calm
3110calm

Sunrise & sunset in December

DaylightNight

Daylight runs from about 13 h 18 min at the start of December to 13 h 24 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 6 minutes over December. Sunrise moves from 5:07 AM to 5:18 AM, and sunset from 6:23 PM to 6:39 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.35:076:23
213.35:076:24
313.35:076:25
413.35:076:25
513.35:086:26
613.35:086:27
713.35:086:27
813.35:086:28
913.35:086:29
1013.35:096:29
1113.35:096:30
1213.35:096:30
1313.45:106:31
1413.45:106:31
1513.45:106:32
1613.45:116:33
1713.45:116:33
1813.45:126:34
1913.45:126:34
2013.45:126:35
2113.45:136:35
2213.45:136:36
2313.45:146:36
2413.45:146:37
2513.45:156:37
2613.45:156:37
2713.45:166:38
2813.45:166:38
2913.45:176:39
3013.45:176:39
3113.45:186:39

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 6.72 kWh/m².

For context, solar energy here swings from a low near 3.9 kWh/m² to a high of 7.02 kWh/m² in November across the year — December's 6.72 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
16.9Intense
26.9Intense
36.9Intense
46.9Intense
56.8Intense
66.8Intense
76.8Intense
86.8Intense
96.8Intense
106.8Intense
116.8Intense
126.8Intense
136.7Intense
146.7Intense
156.7Intense
166.7Intense
176.7Intense
186.7Intense
196.6Intense
206.6Intense
216.6Intense
226.6Intense
236.6Intense
246.5Intense
256.5Intense
266.5Intense
276.5Intense
286.4Intense
296.4Intense
306.4Intense
316.3Intense
Planning a trip in December

Hazard calendar for Ihosy

In seasonPeak

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

Ihosy's monsoon runs December–February, 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 Ihosy?

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

4.8
Sightseeing
11th-best month of the year
6.0
Beach & pool
9th-best month of the year

December is a reasonable time to visit Ihosy for sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Ihosy in December

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

In December, Ihosy sees daytime highs around 29°C and nights near 19°C. Pack light clothes, rain gear and sun protection. About 16 days see rain.

light clothesrain gearsun protection

UV index in Ihosy in December

LowModerateHighVery highExtreme

Clear-sky midday UV in December peaks around 15 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Ihosy peaks around February 12 at about 16 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 19 at about 6 (high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highHighVery highExtremeFeb 12UV 16Jun 19UV 6
UV index (midday)Level
Jan15Extreme
Feb17Extreme
Mar13Extreme
Apr10Very high
May7Very high
Jun6High
Jul7High
Aug8Very high
Sep9Very high
Oct12Extreme
Nov13Extreme
Dec15Extreme

Air quality in Ihosy 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 Ihosy is worst in October — around 18 µg/m³ PM2.5 (moderate), about 5.6× the cleanest month (January, 3 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodOct 1518 µg/m³Mar 123 µg/m³
PM2.5 (µg/m³)Level
Jan3Good
Feb3Good
Mar3Good
Apr4Good
May7Good
Jun6Good
Jul8Good
Aug12Good
Sep15Moderate
Oct18Moderate
Nov14Moderate
Dec5Good
Location & terrain

Where is Ihosy?

Ihosy sits at 22.4°S, 46.1°E, 733 m above sea level, in Madagascar. The nearest listed city is Ivohibe, 78 km away.

BetrokaAmbalavaoVondrozoBerorohaFianarantsoaIkongoIkalamavony

Topography around Ihosy

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

Within 3 km, the terrain around Ihosy has significant variations in elevation — a maximum elevation change of 357 m around an average of 763 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 591 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,163 m.

The land around Ihosy is covered by grassland (66%) and cropland (23%) within 3 km, grassland (85%) within 16 km, and grassland (94%) within 80 km.

3 km
357 m
16 km
591 m
80 km
2,163 m
treesshrubsgrasslandcroplandartificial surfaceswater
December weather nearby: Ivohibe 78 km · Betroka 96 km · Ambalavao 105 km · Vondrozo 127 km · Beroroha 128 km · Fianarantsoa 145 km · Ikongo 147 km · Ikalamavony 147 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 Ihosy (-22.4029°, 46.1258°, elevation 733 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).