Dellys weather in January

In January, Dellys sees average daytime highs of 14°C and overnight lows near 12°C, with 126 mm of rain across 12.9 wet days and about 9.8 hours of daylight. It is the 11th-warmest and 3rd-wettest month of the year here.

Day-to-day highs hold fairly steady near 14°C through the month. The sky is clear or mostly clear about 41% of the time in January, and the air most often feels dry.

Daylight stretches from about 9 h 30 min at the start of January to 10 h 06 min by month's end. Set against the rest of the year, January is Dellys's 10th-clearest and 2nd-windiest month. For the whole year in context, see Dellys's year-round climate.

Daytime high
14°
11th warmest
Overnight low
12°
2nd coldest
Rainfall
126 mm
12.9 wet days
Daylight
9 h 42 min
8:02 AM – 5:45 PM
Cloud cover
48%
10th clearest
Wind
20 km/h
2nd windiest
Solar energy
2.52 kWh/m²
Travel score
4.2
out of 10

Temperature in January

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 14°C through the month.

A typical January day in Dellys reaches about 14°C in the afternoon and slips back to 12°C overnight — a 2°C spread between the day's warmth and the night's chill. On most days the high lands between 12°C and 16°C. Set against its neighbours, January runs about 1°C cooler than December and on par with February.

10°15°20°151015202531
Avg high (°C)Avg low (°C)
11513
21513
31513
41513
51512
61512
71512
81512
91512
101512
111512
121512
131412
141412
151412
161412
171412
181412
191412
201412
211412
221412
231412
241412
251412
261412
271412
281412
291412
301412
311412

Dellys weather by month

How January compares with the rest of the year at a glance. January is the 11th-warmest and 3rd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan14° / 12°12612.99.84.2
Feb14° / 12°9610.610.64.2
Mar15° / 13°778.811.75.0
Apr17° / 14°648.112.95.7
May19° / 17°475.613.97.1
Jun22° / 20°71.414.58.7
Jul25° / 23°10.314.39.4
Aug26° / 24°51.213.48.9
Sep24° / 23°355.412.38.1
Oct22° / 20°687.8117.2
Nov18° / 16°13213.1105.7
Dec16° / 13°13212.19.54.8

Cloud cover in January

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 41% of the time in January.

Beyond those clear spells, partly cloudy skies cover about 21% of January, with mostly cloudy or overcast conditions the remaining 39%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
16535
26634
36634
46634
56634
66634
76634
86634
96535
106535
116535
126337
136337
146238
156139
166139
176040
186040
195941
205941
215842
225842
235842
245743
255743
265743
275743
285842
295842
305941
315941

Chance of precipitation in January

Any precipitation

Dellys gets around 126 mm of rain over 12.9 wet days in January. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 42% and peaks near 46% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%151015202531
Rain chance (%)
137
237
337
437
537
637
737
837
938
1038
1138
1239
1339
1440
1541
1642
1743
1843
1944
2045
2145
2245
2346
2446
2546
2646
2746
2846
2946
3045
3145

Humidity in January

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, January lands in the dry band about 98% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)
1964
2973
3973
4973
5973
6973
7982
8982
9982
10982
11982
12982
13991
14991
15991
16991
17991
18991
19991
20991
21991
22991
23991
24991
25991
26991
27991
28982
29982
30982
31982

Wind in January

Winds average 20 km/h in January.

Across January, daily wind ranges from about 20 km/h on the calmest days to 21 km/h at its breeziest. It stays fairly steady from day to day.

0510152025151015202531
Wind speed (km/h)Feels
121breezy
220breezy
320breezy
420breezy
520breezy
620breezy
720breezy
820light breeze
920light breeze
1020light breeze
1120light breeze
1220light breeze
1320light breeze
1420light breeze
1520light breeze
1620light breeze
1720light breeze
1820light breeze
1920light breeze
2020breezy
2120breezy
2220breezy
2320breezy
2421breezy
2521breezy
2621breezy
2721breezy
2821breezy
2921breezy
3021breezy
3121breezy

Sunrise & sunset in January

DaylightNight

Daylight runs from about 9 h 30 min at the start of January to 10 h 06 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 36 minutes over January. Sunrise moves from 8:02 AM to 7:55 AM, and sunset from 5:33 PM to 6:01 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
19.58:025:33
29.58:025:33
39.58:035:34
49.58:035:35
59.58:035:36
69.68:035:37
79.68:035:37
89.68:035:38
99.68:035:39
109.68:035:40
119.68:035:41
129.78:035:42
139.78:025:43
149.78:025:44
159.78:025:45
169.78:025:45
179.78:025:46
189.88:015:47
199.88:015:48
209.88:005:49
219.88:005:50
229.98:005:51
239.97:595:52
249.97:595:53
259.97:585:55
2610.07:585:56
2710.07:575:57
2810.07:575:58
2910.07:565:59
3010.17:556:00
3110.17:556:01

Solar energy in January

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in January, about 2.52 kWh/m².

For context, solar energy here swings from a low near 2.22 kWh/m² to a high of 7.46 kWh/m² in July across the year — January's 2.52 kWh/m² sits near the bottom.

0123151015202531
Solar energy (kWh/m²)Level
12.3Moderate
22.3Moderate
32.3Moderate
42.4Moderate
52.4Moderate
62.4Moderate
72.4Moderate
82.4Moderate
92.4Moderate
102.4Moderate
112.5Moderate
122.5Moderate
132.5Moderate
142.5Moderate
152.5Moderate
162.5Moderate
172.5Moderate
182.5Moderate
192.5Moderate
202.6Moderate
212.6Moderate
222.6Moderate
232.6Moderate
242.7Moderate
252.7Moderate
262.7Moderate
272.7Moderate
282.8Moderate
292.8Moderate
302.9Moderate
312.9Moderate
Planning a trip in January

Hazard calendar for Dellys

In seasonPeak

In January, Dellys sits inside its rainy season season. The full year is below, with each hazard's peak months called out.

Dellys's rainy season runs October–April, when most of the year's rain falls.

Dellys sees seasonal dust haze (June–July), heaviest in July.

Rainy season
Dust
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is January a good time to visit Dellys?

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

4.2
Sightseeing
11th-best month of the year
0.0
Beach & pool
11th-best month of the year

January is a reasonable time to visit Dellys for sightseeing.

What to pack for Dellys in January

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

In January, Dellys sees daytime highs around 14°C and nights near 12°C. Worth packing: a warm layer, rain gear and a windbreaker. About 13 days see rain.

a warm layerrain geara windbreaker

Sea temperature near Dellys in January

The nearest coast averages about 16°C in January — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 19 km away) is warmest in August at about 25°C and coldest in February near 15°C.

It's comfortable for a long swim from Jun 5 to Nov 7 — about 5.1 months when the water holds above 20°C.

15°20°25°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmcomfortable to swim
Sea temperature (°C)Comfort
Jan16Cool
Feb15Cool
Mar15Cool
Apr16Cool
May18Cool
Jun21Refreshing
Jul24Refreshing
Aug25Warm
Sep25Warm
Oct22Refreshing
Nov19Cool
Dec17Cool

UV index in Dellys in January

LowModerateHighVery highExtreme

Clear-sky midday UV in January peaks around 2. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Dellys peaks around July 16 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 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.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highHighModerateJul 16UV 9Dec 20UV 2
UV index (midday)Level
Jan2Moderate
Feb3Moderate
Mar6High
Apr8Very high
May7Very high
Jun9Very high
Jul10Very high
Aug9Very high
Sep7High
Oct5Moderate
Nov3Moderate
Dec2Low

Air quality in Dellys in January

GoodModeratePoorUnhealthyVery unhealthy

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

Air quality in Dellys is worst in August — around 64 µg/m³ PM2.5 (unhealthy), and holds fairly steady the rest of the year.

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

020406080JanFebMarAprMayJunJulAugSepOctNovDecPoorUnhealthyPoorUnhealthyPoorAug 1063 µg/m³Nov 1844 µg/m³
PM2.5 (µg/m³)Level
Jan47Poor
Feb53Poor
Mar59Unhealthy
Apr57Unhealthy
May55Poor
Jun51Poor
Jul63Unhealthy
Aug64Unhealthy
Sep47Poor
Oct55Unhealthy
Nov43Poor
Dec50Poor
Location & terrain

Where is Dellys?

Dellys sits at 36.9°N, 3.9°E, 63 m above sea level, in Algeria. The nearest listed city is Tadmaït, 19 km away.

Topography around Dellys

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

Within 3 km, the terrain around Dellys has significant variations in elevation — a maximum elevation change of 374 m around an average of 61 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 890 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,266 m.

The land around Dellys is covered by water (59%) within 3 km, water (56%) within 16 km, and water (38%), trees (27%) and grassland (20%) within 80 km.

3 km
374 m
16 km
890 m
80 km
2,266 m
treesshrubsgrasslandcroplandartificial surfaceswater
January weather nearby: Tadmaït 19 km · Makouda 20 km · Naciria 20 km · Draa Ben Khedda 21 km · Boudjima 25 km · Tizi Ouzou 26 km · Bordj Menaïel 26 km · Tirmitine 30 km

Algeria travel facts

Travel advisory
Level 2
Exercise Increased Caution
Power plugs
Type C / F
230 V · 50 Hz
Prices
≈ 33% of US
price level, 2025
GDP per capita
$6,051
2025
Happiness
5.7 / 10
World Happiness, 2025
Safe drinking water
69%
of population, 2024
Homicide rate
1.2
per 100k, 2023
Road deaths
20.9
per 100k/yr, 2019
Income group
Upper middle
World Bank
English
Low
EF EPI 468
Religion
Muslim 99%

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 Dellys (36.9172°, 3.9131°, elevation 63 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).