Imerimandroso weather in December

In December, Imerimandroso sees average daytime highs of 28°C and overnight lows near 19°C, with 165 mm of rain across 17.3 wet days and about 13 hours of daylight. It is the 1st-warmest and 4th-wettest month of the year here.

Day-to-day highs hold fairly steady near 28°C through the month. The sky is clear or mostly clear about 10% of the time in December, and the air most often feels muggy.

Daylight stretches from about 13 hours at the start of December to 13 hours by month's end. Set against the rest of the year, December is Imerimandroso's 9th-clearest and 12th-windiest month. For the whole year in context, see Imerimandroso's year-round climate.

Daytime high
28°
1st warmest
Overnight low
19°
9th coldest
Rainfall
165 mm
17.3 wet days
Daylight
13 hours
5:11 AM – 6:13 PM
Cloud cover
70%
9th clearest
Wind
9 km/h
12th windiest
Solar energy
5.93 kWh/m²
Travel score
5.0
out of 10

Temperature in December

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 28°C through the month.

A typical December day in Imerimandroso reaches about 28°C in the afternoon and slips back to 19°C overnight — a 9°C spread between the day's warmth and the night's chill. On most days the high lands between 25°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)
12818
22818
32818
42818
52818
62819
72819
82819
92819
102819
112819
122819
132819
142819
152819
162819
172819
182819
192819
202819
212819
222819
232819
242819
252819
262819
272819
282819
292819
302819
312719

Imerimandroso weather by month

How December compares with the rest of the year at a glance. December is the 1st-warmest and 4th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan27° / 20°28823.912.94.2
Feb27° / 20°25022.212.64.2
Mar27° / 19°16719.212.15.0
Apr26° / 18°449.911.66.6
May24° / 16°235.911.27.6
Jun22° / 14°123.3117.5
Jul21° / 13°143.411.17.3
Aug22° / 13°102.811.47.6
Sep23° / 14°82.211.98.2
Oct26° / 16°184.512.47.7
Nov28° / 17°488.712.86.6
Dec28° / 19°16517.3135.0

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 10% 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 71%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
13763
23664
33664
43565
53565
63466
73466
83466
93268
103169
113169
123169
133070
143070
152971
162773
172773
182674
192674
202674
212674
222674
232674
242674
252476
262377
272377
282278
292278
302179
312080

Chance of precipitation in December

Any precipitation

Imerimandroso gets around 165 mm of rain over 17.3 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 56% and peaks near 71% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%80%151015202531
Rain chance (%)
143
243
344
444
545
646
746
847
948
1049
1150
1251
1352
1454
1555
1657
1758
1859
1960
2061
2162
2263
2364
2465
2566
2667
2768
2869
2970
3070
3171

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 49% of days. Sticky, muggy-or-worse air turns up on roughly 49% of them.

0%25%50%75%100%151015202531
Comfortable (%)Humid (%)Muggy (%)
1145828
2135829
3125731
4115732
5105733
6105634
795536
895437
985339
1085141
1175142
1274944
1374746
1464648
1564450
1654352
1754253
1844254
1944155
2034057
2134057
2233958
2323860
2423761
2523662
2623563
2713465
2813366
2913267
3013168
3113069

Wind in December

Winds average 9 km/h in December, the calmest month.

Across December, daily wind ranges from about 8 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
59calm
69calm
79calm
89calm
99calm
109calm
119calm
129calm
139calm
149calm
159calm
169calm
179calm
188calm
198calm
208calm
218calm
228calm
238calm
248calm
259calm
269calm
279calm
289calm
299calm
309calm
319calm

Sunrise & sunset in December

DaylightNight

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

Days grow by about 0 minutes over December. Sunrise moves from 5:06 AM to 5:18 AM, and sunset from 6:04 PM to 6:20 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.05:066:04
213.05:076:05
313.05:076:06
413.05:076:06
513.05:076:07
613.05:076:07
713.05:086:08
813.05:086:09
913.05:086:09
1013.05:096:10
1113.05:096:10
1213.05:096:11
1313.05:106:11
1413.05:106:12
1513.05:106:12
1613.05:116:13
1713.05:116:13
1813.05:126:14
1913.05:126:14
2013.05:126:15
2113.05:136:15
2213.05:136:16
2313.05:146:16
2413.05:146:17
2513.05:156:17
2613.05:156:18
2713.05:166:18
2813.05:166:19
2913.05:176:19
3013.05:176:19
3113.05:186:20

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 5.93 kWh/m².

For context, solar energy here swings from a low near 3.29 kWh/m² to a high of 6.32 kWh/m² in November across the year — December's 5.93 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
16.2Intense
26.2Intense
36.2Intense
46.2Intense
56.2Intense
66.1Intense
76.1Intense
86.1Intense
96.1Intense
106.1Intense
116.1Intense
126.0Intense
136.0Intense
146.0Bright
156.0Bright
165.9Bright
175.9Bright
185.9Bright
195.8Bright
205.8Bright
215.8Bright
225.7Bright
235.7Bright
245.7Bright
255.6Bright
265.6Bright
275.5Bright
285.5Bright
295.5Bright
305.4Bright
315.4Bright
Planning a trip in December

Hazard calendar for Imerimandroso

In seasonPeak

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

Imerimandroso sits in the South Indian Ocean cyclone belt; the season peaks January–March.

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

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

Is December a good time to visit Imerimandroso?

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

5.0
Sightseeing
9th-best month of the year
5.5
Beach & pool
6th-best month of the year

December is a reasonable time to visit Imerimandroso for sightseeing.

What to pack for Imerimandroso in December

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

In December, Imerimandroso sees daytime highs around 28°C and nights near 19°C. Pack light clothes and rain gear. Worth having: sun protection. About 17 days see rain.

light clothesrain gearsun protection

UV index in Imerimandroso 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 Imerimandroso peaks around February 10 at about 16 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 18 at about 7 (very high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highExtremeFeb 10UV 16Jun 18UV 7
UV index (midday)Level
Jan16Extreme
Feb16Extreme
Mar14Extreme
Apr11Extreme
May9Very high
Jun7High
Jul8Very high
Aug10Very high
Sep12Extreme
Oct13Extreme
Nov13Extreme
Dec15Extreme

Air quality in Imerimandroso 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 Imerimandroso is worst in November — around 43 µg/m³ PM2.5 (poor), about 7.4× the cleanest month (January, 6 µg/m³).

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

0204060JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateNov 1440 µg/m³Jan 246 µg/m³
PM2.5 (µg/m³)Level
Jan6Good
Feb6Good
Mar6Good
Apr6Good
May8Good
Jun7Good
Jul7Good
Aug7Good
Sep8Good
Oct22Moderate
Nov43Poor
Dec10Good
Location & terrain

Where is Imerimandroso?

Imerimandroso sits at 17.4°S, 48.6°E, 755 m above sea level, in Madagascar. The nearest listed city is Amparafaravola, 42 km away.

Fenoarivo Atsinanana

Topography around Imerimandroso

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

Within 3 km, the terrain around Imerimandroso has only modest variations in elevation — a maximum elevation change of 138 m around an average of 769 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 703 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,522 m.

The land around Imerimandroso is covered by water (36%), cropland (34%) and grassland (24%) within 3 km, grassland (41%) and cropland (34%) within 16 km, and grassland (51%) and trees (32%) within 80 km.

3 km
138 m
16 km
703 m
80 km
1,522 m
treesshrubsgrasslandcroplandartificial surfaceswaterwetland
December weather nearby: Amparafaravola 42 km · Andilamena 47 km · Ambatondrazaka 48 km · Vohibinany 49 km · Ambodimanga II 65 km · Vavatenina 66 km · Didy 76 km · Fenoarivo Atsinanana 88 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 Imerimandroso (-17.4333°, 48.5833°, elevation 755 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. Tropical-cyclone seasons are the published climatological basin seasons (NOAA National Hurricane Center / regional warning centres). 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).