Oued Sly weather in January

In January, Oued Sly sees average daytime highs of 15°C and overnight lows near 5°C, with 53 mm of rain across 8.8 wet days and about 9.8 hours of daylight. It is the 12th-warmest and 2nd-wettest month of the year here.

Day-to-day highs hold fairly steady near 15°C through the month. The sky is clear or mostly clear about 38% of the time in January, and the air most often feels dry.

Daylight stretches from about 9 h 36 min at the start of January to 10 h 12 min by month's end. Set against the rest of the year, January is Oued Sly's 10th-clearest and 4th-windiest month. For the whole year in context, see Oued Sly's year-round climate.

Daytime high
15°
12th warmest
Overnight low
1st coldest
Rainfall
53 mm
8.8 wet days
Daylight
9 h 48 min
8:11 AM – 5:58 PM
Cloud cover
50%
10th clearest
Wind
8 km/h
4th windiest
Solar energy
2.64 kWh/m²
Travel score
4.7
out of 10

Temperature in January

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 15°C through the month.

A typical January day in Oued Sly reaches about 15°C in the afternoon and slips back to 5°C overnight — a 10°C spread between the day's warmth and the night's chill. On most days the high lands between 11°C and 19°C. Set against its neighbours, January runs about 1°C cooler than December and about 1°C cooler than February.

10°15°20°151015202531
Avg high (°C)Avg low (°C)
1156
2156
3155
4155
5155
6155
7155
8155
9155
10155
11155
12155
13155
14155
15155
16155
17155
18155
19155
20155
21155
22155
23155
24155
25155
26155
27155
28155
29155
30155
31155

How January really feels in Oued Sly

Once humidity and wind are folded in, January 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

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

Oued Sly weather by month

How January compares with the rest of the year at a glance. January is the 12th-warmest and 2nd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan15° / 538.89.84.7
Feb16° / 498.510.65.3
Mar19° / 527.811.76.6
Apr22° / 10°507.812.97.2
May27° / 14°325.113.97.4
Jun32° / 18°71.514.45.0
Jul36° / 22°20.414.22.5
Aug36° / 22°61.713.42.6
Sep31° / 18°204.112.25.3
Oct26° / 14°315.411.17.6
Nov19° / 10°568.710.16.5
Dec16° / 477.59.65.4

Cloud cover in January

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 38% of the time in January.

Beyond those clear spells, partly cloudy skies cover about 18% of January, with mostly cloudy or overcast conditions the remaining 43%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
16139
26238
36238
46238
56238
66238
76238
86139
96040
106040
115941
125842
135743
145644
155644
165545
175446
185347
195347
205248
215248
225248
235149
245248
255248
265347
275347
285545
295644
305743
315743

Chance of precipitation in January

Any precipitation

Oued Sly gets around 53 mm of rain over 8.8 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 29% and peaks near 33% on the wettest days. The odds climb toward the end of the month.

0%10%20%30%40%151015202531
Rain chance (%)
124
224
324
424
524
624
724
824
925
1025
1126
1226
1327
1428
1528
1629
1730
1830
1931
2032
2132
2232
2333
2433
2533
2633
2733
2833
2933
3033
3132

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 100% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)
1100
2100
3100
4100
5100
6100
7100
8100
9100
10100
11100
12100
13100
14100
15100
16100
17100
18100
19100
20100
21100
22100
23100
24100
25100
26100
27100
28100
29100
30100
31100

Wind in January

Winds average 8 km/h in January.

Across January, 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
18calm
28calm
38calm
48calm
58calm
68calm
78calm
88calm
98calm
108calm
118calm
128calm
138calm
148calm
158calm
168calm
178calm
188calm
198calm
208calm
218calm
228calm
238calm
248calm
258calm
268calm
279calm
289calm
299calm
309calm
319calm

Sunrise & sunset in January

DaylightNight

Daylight runs from about 9 h 36 min at the start of January to 10 h 12 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 8:11 AM to 8:04 AM, and sunset from 5:46 PM to 6:13 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
19.68:115:46
29.68:115:47
39.68:115:47
49.68:115:48
59.68:115:49
69.68:115:50
79.68:125:50
89.78:125:51
99.78:125:52
109.78:115:53
119.78:115:54
129.78:115:55
139.78:115:56
149.88:115:57
159.88:115:57
169.88:115:58
179.88:105:59
189.88:106:00
199.98:106:01
209.98:096:02
219.98:096:03
229.98:096:04
2310.08:086:05
2410.08:086:06
2510.08:076:07
2610.08:076:08
2710.18:066:09
2810.18:066:10
2910.18:056:11
3010.18:046:12
3110.28:046:13

Solar energy in January

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in January, about 2.64 kWh/m².

For context, solar energy here swings from a low near 2.31 kWh/m² to a high of 7.64 kWh/m² in July across the year — January's 2.64 kWh/m² sits near the bottom.

0123151015202531
Solar energy (kWh/m²)Level
12.5Moderate
22.5Moderate
32.5Moderate
42.5Moderate
52.5Moderate
62.5Moderate
72.6Moderate
82.6Moderate
92.6Moderate
102.6Moderate
112.6Moderate
122.6Moderate
132.6Moderate
142.6Moderate
152.6Moderate
162.6Moderate
172.6Moderate
182.6Moderate
192.6Moderate
202.7Moderate
212.7Moderate
222.7Moderate
232.7Moderate
242.7Moderate
252.8Moderate
262.8Moderate
272.8Moderate
282.9Moderate
292.9Moderate
303.0Moderate
313.0Moderate
Planning a trip in January

Hazard calendar for Oued Sly

In seasonPeak

None of Oued Sly's seasonal hazards are active in January. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do peak.

Oued Sly sees seasonal dust haze (July–August), heaviest in July.

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

Is January a good time to visit Oued Sly?

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

4.7
Sightseeing
10th-best month of the year
0.0
Beach & pool
12th-best month of the year

January is a reasonable time to visit Oued Sly for sightseeing.

What to pack for Oued Sly in January

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

In January, Oued Sly sees daytime highs around 15°C and nights near 5°C. Worth packing: a warm layer and rain gear. About 9 days see rain.

a warm layerrain gear

Sea temperature near Oued Sly 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 42 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 8 to Nov 1 — about 4.8 months when the water holds above 20°C.

15°20°25°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmcomfortable to swim
Sea temperature (°C)Comfort
Jan16Cool
Feb15Cool
Mar15Cool
Apr16Cool
May18Cool
Jun21Refreshing
Jul23Refreshing
Aug25Warm
Sep24Refreshing
Oct21Refreshing
Nov19Cool
Dec17Cool

UV index in Oued Sly in January

LowModerateHighVery highExtreme

Clear-sky midday UV in January peaks around 3. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Oued Sly peaks around July 16 at about 10 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 19 at about 2 (moderate).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 10 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highModerateJul 16UV 10Dec 19UV 2
UV index (midday)Level
Jan3Moderate
Feb4Moderate
Mar7High
Apr7High
May8Very high
Jun9Very high
Jul10Very high
Aug8Very high
Sep7Very high
Oct5Moderate
Nov3Moderate
Dec2Low

Air quality in Oued Sly 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 Oued Sly is worst in September — around 28 µg/m³ PM2.5 (moderate), and holds fairly steady the rest of the year.

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateSep 1028 µg/m³Jan 1318 µg/m³
PM2.5 (µg/m³)Level
Jan18Moderate
Feb22Moderate
Mar27Moderate
Apr23Moderate
May19Moderate
Jun21Moderate
Jul26Moderate
Aug27Moderate
Sep28Moderate
Oct22Moderate
Nov19Moderate
Dec19Moderate
Location & terrain

Where is Oued Sly?

Oued Sly sits at 36.1°N, 1.2°E, 90 m above sea level, in Algeria. The nearest listed city is Boukadir, 8.0 km away.

Topography around Oued Sly

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

Within 3 km, the terrain around Oued Sly has only modest variations in elevation — a maximum elevation change of 167 m around an average of 104 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 653 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,916 m.

The land around Oued Sly is covered by trees (29%) and cropland (28%) within 3 km, cropland (41%) and grassland (39%) within 16 km, and grassland (30%), cropland (30%) and water (21%) within 80 km.

3 km
167 m
16 km
653 m
80 km
1,916 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwater
January weather nearby: Boukadir 8.0 km · Ech Chettia 12 km · Chlef 14 km · ’Aïn Merane 22 km · Mazouna 27 km · Ammi Moussa 27 km · Oued Rhiou 30 km · Oued Fodda 31 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 Oued Sly (36.1012°, 1.1995°, elevation 90 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).