Necochea weather in December

In December, Necochea sees average daytime highs of 23°C and overnight lows near 15°C, with 65 mm of rain across 8 wet days and about 14.6 hours of daylight. It is the 3rd-warmest and 7th-wettest month of the year here.

Highs climb over the month, from about 22°C in the first days to 25°C by the end. The sky is clear or mostly clear about 53% of the time in December, and the air most often feels dry.

Daylight stretches from about 14 h 30 min at the start of December to 14 h 42 min by month's end. Set against the rest of the year, December is Necochea's 2nd-clearest and 3rd-windiest month. For the whole year in context, see Necochea's year-round climate.

Daytime high
23°
3rd warmest
Overnight low
15°
9th coldest
Rainfall
65 mm
8 wet days
Daylight
14 h 42 min
5:31 AM – 8:11 PM
Cloud cover
42%
2nd clearest
Wind
19 km/h
3rd windiest
Solar energy
7.64 kWh/m²
Travel score
7.5
out of 10

Necochea is city in Buenos Aires Province, Argentina.

Founded
1881

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in December

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 22°C in the first days to 25°C by the end.

A typical December day in Necochea reaches about 23°C in the afternoon and slips back to 15°C overnight — a 9°C spread between the day's warmth and the night's chill. On most days the high lands between 18°C and 28°C. Set against its neighbours, December runs about 3°C warmer than November and about 2°C cooler than January.

10°15°20°25°30°151015202531
Avg high (°C)Avg low (°C)
12213
22213
32213
42213
52213
62214
72214
82214
92314
102314
112314
122314
132314
142314
152314
162415
172415
182415
192415
202415
212415
222415
232415
242516
252516
262516
272516
282516
292516
302516
312516

Necochea weather by month

How December compares with the rest of the year at a glance. December is the 3rd-warmest and 7th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan25° / 16°759.314.47.3
Feb24° / 17°72813.57.4
Mar23° / 15°738.212.37.2
Apr19° / 12°778.8116.5
May16° / 10°537.49.95.2
Jun13° / 547.69.43.8
Jul12° / 527.79.63.3
Aug13° / 577.210.54.0
Sep15° / 567.911.74.6
Oct17° / 10°738.6135.7
Nov20° / 12°839.814.16.6
Dec23° / 15°65814.67.5

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 53% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 15% of December, with mostly cloudy or overcast conditions the remaining 31%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
16832
26832
36832
46832
56832
66832
76832
86832
96733
106733
116733
126733
136832
146832
156832
166832
176832
186931
196931
207030
217030
227030
237030
247030
257129
267030
277030
287030
297030
306931
316931

Chance of precipitation in December

Any precipitation

Necochea gets around 65 mm of rain over 8 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 26% and peaks near 30% on the wettest days.

0%10%20%30%40%151015202531
Rain chance (%)
130
229
329
428
528
627
727
826
926
1026
1125
1225
1325
1424
1524
1624
1724
1824
1924
2025
2125
2225
2326
2426
2526
2627
2727
2827
2928
3028
3129

Humidity in December

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, December lands in the dry band about 53% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)
1672571
2662671
3652681
4642781
5642781
6632791
7622891
86128101
96029101
106029101
115929111
125929111
135829121
145729131
155729131
165629141
175529151
185329162
195229172
205029192
214829202
224729212
234629233
244429243
254329254
264129264
274029274
283929285
293729295
303629296
313629306

Wind in December

Winds average 19 km/h in December.

Across December, daily wind ranges from about 18 km/h on the calmest days to 19 km/h at its breeziest. It stays fairly steady from day to day.

0510152025151015202531
Wind speed (km/h)Feels
118light breeze
218light breeze
318light breeze
419light breeze
519light breeze
619light breeze
719light breeze
819light breeze
919light breeze
1019light breeze
1119light breeze
1219light breeze
1319light breeze
1419light breeze
1519light breeze
1619light breeze
1719light breeze
1819light breeze
1919light breeze
2019light breeze
2119light breeze
2219light breeze
2319light breeze
2419light breeze
2518light breeze
2618light breeze
2718light breeze
2818light breeze
2918light breeze
3018light breeze
3118light breeze

Sunrise & sunset in December

DaylightNight

Daylight runs from about 14 h 30 min at the start of December to 14 h 42 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 12 minutes over December. Sunrise moves from 5:30 AM to 5:38 AM, and sunset from 8:00 PM to 8:18 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
114.55:308:00
214.55:308:00
314.55:308:01
414.55:298:02
514.65:298:03
614.65:298:04
714.65:298:05
814.65:298:06
914.65:298:06
1014.65:308:07
1114.65:308:08
1214.65:308:09
1314.75:308:09
1414.75:308:10
1514.75:308:11
1614.75:318:11
1714.75:318:12
1814.75:318:13
1914.75:328:13
2014.75:328:14
2114.75:338:14
2214.75:338:15
2314.75:348:15
2414.75:348:16
2514.75:358:16
2614.75:358:16
2714.75:368:17
2814.75:368:17
2914.75:378:17
3014.75:388:18
3114.75:388:18

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 7.64 kWh/m² — the sunniest month for solar.

For context, solar energy here swings from a low near 1.87 kWh/m² to a high of 7.64 kWh/m² in December across the year — December's 7.64 kWh/m² sits near the top of that range.

02468151015202531
Solar energy (kWh/m²)Level
17.4Intense
27.5Intense
37.5Intense
47.5Intense
57.5Intense
67.5Intense
77.5Intense
87.6Intense
97.6Intense
107.6Intense
117.6Intense
127.6Intense
137.6Intense
147.7Intense
157.7Intense
167.7Intense
177.7Intense
187.7Intense
197.7Intense
207.7Intense
217.7Intense
227.7Intense
237.7Intense
247.7Intense
257.7Intense
267.7Intense
277.7Intense
287.7Intense
297.7Intense
307.7Intense
317.7Intense
Planning a trip in December

Is December a good time to visit Necochea?

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

7.5
Sightseeing
1st-best month of the year
6.0
Beach & pool
3rd-best month of the year

December is one of the better times to visit Necochea for general sightseeing.

What to pack for Necochea in December

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

In December, Necochea sees daytime highs around 23°C and nights near 15°C. Pack sun protection. Worth having: light clothes and rain gear. About 8 days see rain.

sun protectionlight clothesrain gear

Sea temperature near Necochea in December

The nearest coast averages about 17°C in December — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 13 km away) is warmest in February at about 20°C and coldest in August near 10°C.

It's comfortable for a long swim from Feb 3 to Mar 1 — about 0.9 months when the water holds above 20°C.

10°15°20°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshing
Sea temperature (°C)Comfort
Jan20Cool
Feb20Refreshing
Mar20Cool
Apr18Cool
May16Cool
Jun13Bracing
Jul11Bracing
Aug10Bracing
Sep11Bracing
Oct12Bracing
Nov15Bracing
Dec17Cool

UV index in Necochea in December

LowModerateHighVery highExtreme

Clear-sky midday UV in December peaks around 12 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Necochea peaks around December 20 at about 12 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 20 at about 2 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 9 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highModerateModerateVery highExtremeDec 20UV 12Jun 20UV 2
UV index (midday)Level
Jan11Extreme
Feb11Extreme
Mar8Very high
Apr5High
May3Moderate
Jun2Low
Jul2Moderate
Aug3Moderate
Sep5Moderate
Oct7Very high
Nov10Extreme
Dec12Extreme
Location & terrain

Where is Necochea?

Necochea sits at 38.6°S, 58.7°W, 19 m above sea level, in Argentina. The nearest listed city is Miramar, 85 km away.

Topography around Necochea

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

Within 3 km, the terrain around Necochea has only modest variations in elevation — a maximum elevation change of 29 m around an average of 15 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 59 m; within 80 km, significant variations in elevation — a maximum elevation change of 409 m.

The land around Necochea is covered by artificial surfaces (52%) and grassland (33%) within 3 km, cropland (50%) and water (34%) within 16 km, and cropland (51%) and water (33%) within 80 km.

3 km
29 m
16 km
59 m
80 km
409 m
treesgrasslandcroplandartificial surfacesbare terrainwater
December weather nearby: Miramar 85 km · Balcarce 89 km · Mar del Plata 120 km · Santa Clara del Mar 134 km · Tres Arroyos 135 km · Benito Juárez 135 km · Tandil 141 km · Ayacucho 157 km

Argentina travel facts

Travel advisory
Level 1
Exercise Normal Precautions
Power plugs
Type C / I
220 V · 50 Hz
Prices
≈ 46% of US
price level, 2025
GDP per capita
$14,898
2025
Happiness
6.4 / 10
World Happiness, 2025
Homicide rate
4.5
per 100k, 2023
Road deaths
14.1
per 100k/yr, 2019
Income group
Upper middle
World Bank
English
High
EF EPI 575
Religion
Roman Catholic 63%none 19%Evangelical 15%Jehovah's Witness and Church of Jesus Christ 1%

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 Necochea (-38.5545°, -58.7396°, elevation 19 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. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).