Georgetown weather in December

In December, Georgetown sees average daytime highs of 28°C and overnight lows near 24°C, with 207 mm of rain across 27.1 wet days and about 11.6 hours of daylight. It is the 10th-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 15% of the time in December, and the air most often feels oppressive.

Daylight stretches from about 11 h 36 min at the start of December to 11 h 36 min by month's end. Set against the rest of the year, December is Georgetown's 9th-clearest and 6th-windiest month. For the whole year in context, see Georgetown's year-round climate.

Daytime high
28°
10th warmest
Overnight low
24°
5th coldest
Rainfall
207 mm
27.1 wet days
Daylight
11 h 36 min
6:01 AM – 5:37 PM
Cloud cover
68%
9th clearest
Wind
13 km/h
6th windiest
Solar energy
4.32 kWh/m²
Travel score
3.9
out of 10

Georgetown is capital city of Guyana.

Density
1,592/km²
people per km²
Founded
1781

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

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 Georgetown reaches about 28°C in the afternoon and slips back to 24°C overnight — a 3°C spread between the day's warmth and the night's chill. On most days the high lands between 27°C and 29°C. Set against its neighbours, December runs about 1°C cooler than November and on par with January.

20°23°25°28°30°151015202531
Avg high (°C)Avg low (°C)
12825
22825
32825
42825
52825
62825
72825
82825
92825
102824
112824
122824
132824
142824
152824
162824
172824
182824
192824
202824
212824
222724
232724
242724
252724
262724
272724
282724
292724
302724
312724

How December really feels in Georgetown

Once humidity and wind are folded in, December averages 0 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
0
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

December sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

Georgetown weather by month

How December compares with the rest of the year at a glance. December is the 10th-warmest and 4th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan27° / 24°16023.511.64.6
Feb27° / 24°10518.311.85.0
Mar28° / 24°9418.6125.1
Apr28° / 25°13020.112.14.4
May28° / 25°25326.512.33.7
Jun28° / 24°31529.112.43.4
Jul28° / 24°24129.412.43.3
Aug29° / 25°16125.512.23.7
Sep30° / 25°9618.2124.3
Oct30° / 26°10819.311.84.2
Nov29° / 25°17923.811.73.8
Dec28° / 24°20727.111.63.9

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 15% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 21% of December, with mostly cloudy or overcast conditions the remaining 64%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
13070
23070
33070
43169
53169
63169
73367
83367
93466
103466
113466
123565
133565
143565
153664
163664
173763
183763
193763
203961
213961
223961
234060
244060
254060
264060
274258
284258
294258
304357
314357

Chance of precipitation in December

Any precipitation

Georgetown gets around 207 mm of rain over 27.1 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 87% and peaks near 89% on the wettest days.

0%20%40%60%80%100%151015202531
Rain chance (%)
188
289
389
489
589
689
789
889
989
1088
1188
1288
1387
1487
1587
1687
1786
1886
1986
2086
2186
2286
2386
2486
2586
2685
2785
2885
2984
3084
3183

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 88% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202531
Muggy (%)Oppressive (%)Miserable (%)
107030
207228
307426
407525
507723
607921
708119
808218
908416
1008515
1108713
1208812
1309010
140919
150928
160937
170937
181936
191945
201945
211945
221954
231954
241954
251963
261963
272953
282962
292962
302962
313961

Wind in December

Winds average 13 km/h in December.

Across December, daily wind ranges from about 12 km/h on the calmest days to 14 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202531
Wind speed (km/h)Feels
112light breeze
212light breeze
312light breeze
412light breeze
512light breeze
613light breeze
713light breeze
813light breeze
913light breeze
1013light breeze
1113light breeze
1213light breeze
1313light breeze
1413light breeze
1513light breeze
1613light breeze
1713light breeze
1813light breeze
1913light breeze
2013light breeze
2113light breeze
2213light breeze
2313light breeze
2413light breeze
2513light breeze
2614light breeze
2714light breeze
2814light breeze
2914light breeze
3014light breeze
3114light breeze

Sunrise & sunset in December

DaylightNight

Daylight runs from about 11 h 36 min at the start of December to 11 h 36 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 5:53 AM to 6:07 AM, and sunset from 5:31 PM to 5:44 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.65:535:31
211.65:545:32
311.65:545:32
411.65:555:32
511.65:555:33
611.65:565:33
711.65:565:33
811.65:575:34
911.65:575:34
1011.65:585:34
1111.65:585:35
1211.65:595:35
1311.65:595:36
1411.66:005:36
1511.66:005:37
1611.66:015:37
1711.66:015:37
1811.66:025:38
1911.66:025:38
2011.66:035:39
2111.66:035:39
2211.66:035:40
2311.66:045:40
2411.66:045:41
2511.66:055:41
2611.66:055:42
2711.66:065:42
2811.66:065:43
2911.66:075:43
3011.66:075:44
3111.66:075:44

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 4.32 kWh/m².

For context, solar energy here swings from a low near 4.25 kWh/m² to a high of 5.78 kWh/m² in September across the year — December's 4.32 kWh/m² sits near the bottom.

012345151015202531
Solar energy (kWh/m²)Level
14.4Bright
24.4Bright
34.4Bright
44.4Bright
54.4Bright
64.3Bright
74.3Bright
84.3Bright
94.3Bright
104.3Bright
114.3Bright
124.3Bright
134.3Bright
144.3Bright
154.3Bright
164.3Bright
174.3Bright
184.3Bright
194.3Bright
204.3Bright
214.3Bright
224.3Bright
234.3Bright
244.3Bright
254.3Bright
264.3Bright
274.4Bright
284.4Bright
294.4Bright
304.4Bright
314.4Bright
Planning a trip in December

Is December a good time to visit Georgetown?

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

3.9
Sightseeing
7th-best month of the year
4.2
Beach & pool
10th-best month of the year

December is a weaker month for outdoor sightseeing in Georgetown.

What to pack for Georgetown in December

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

In December, Georgetown sees daytime highs around 28°C and nights near 24°C. Pack light clothes and rain gear. About 27 days see rain.

light clothesrain gear

Sea temperature near Georgetown in December

The nearest coast averages about 28°C in December — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea offshore 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
Apr28Warm
May28Warm
Jun28Warm
Jul29Tropical
Aug29Tropical
Sep29Tropical
Oct29Tropical
Nov29Tropical
Dec28Warm

UV index in Georgetown in December

LowModerateHighVery highExtreme

Clear-sky midday UV in December peaks around 10 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Georgetown peaks around March 21 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 12 at about 10 (extreme).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeMar 21UV 14Dec 12UV 10
UV index (midday)Level
Jan12Extreme
Feb13Extreme
Mar15Extreme
Apr14Extreme
May13Extreme
Jun12Extreme
Jul12Extreme
Aug12Extreme
Sep12Extreme
Oct11Extreme
Nov11Extreme
Dec10Extreme

Air quality in Georgetown 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 Georgetown is worst in April — around 26 µg/m³ PM2.5 (moderate), about 2.2× the cleanest month (August, 12 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateApr 1526 µg/m³Aug 2112 µg/m³
PM2.5 (µg/m³)Level
Jan18Moderate
Feb21Moderate
Mar23Moderate
Apr26Moderate
May23Moderate
Jun19Moderate
Jul15Moderate
Aug12Good
Sep13Moderate
Oct15Moderate
Nov14Moderate
Dec17Moderate
Location & terrain

Where is Georgetown?

Georgetown sits at 6.8°N, 58.2°W, 3 m above sea level, in Guyana. The nearest listed city is Parika, 30 km away.

BarticaLindenNew AmsterdamMabaruma

Topography around Georgetown

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

Within 3 km, the terrain around Georgetown has only modest variations in elevation — a maximum elevation change of 17 m around an average of 2 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 25 m; within 80 km, significant variations in elevation — a maximum elevation change of 287 m.

The land around Georgetown is covered by artificial surfaces (43%) and water (24%) within 3 km, water (42%) within 16 km, and trees (44%) and water (36%) within 80 km.

3 km
17 m
16 km
25 m
80 km
287 m
treesgrasslandcroplandartificial surfacesbare terrainwaterwetlandmangroves
December weather nearby: Parika 30 km · Bartica 68 km · Linden 90 km · New Amsterdam 94 km · Mabaruma 237 km · Weg naar Zee 341 km · Welgelegen 342 km · Tammenga 344 km

Guyana travel facts

Travel advisory
Level 3
Reconsider Travel
Power plugs
Type A / B / D / G
240 V · 60 Hz
Prices
≈ 33% of US
price level, 2025
GDP per capita
$32,414
2025
Happiness
6.0 / 10
World Happiness, 2011
Safe drinking water
67%
of population, 2024
Homicide rate
19.1
per 100k, 2023
Road deaths
22.3
per 100k/yr, 2019
Income group
High
World Bank
Religion
Protestant 35%Hindu 25%other Christian 21%Roman Catholic 7%

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 Georgetown (6.8045°, -58.1553°, elevation 3 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).