Alphen aan den Rijn weather in January

In January, Alphen aan den Rijn sees average daytime highs of 6°C and overnight lows near 2°C, with 69 mm of precipitation across 13.3 wet days and about 8 hours of daylight. It is the 12th-warmest and 7th-wettest month of the year here.

Day-to-day highs hold fairly steady near 6°C through the month. The sky is clear or mostly clear about 14% of the time in January, and the air most often feels dry.

Daylight stretches from about 7 h 36 min at the start of January to 8 h 42 min by month's end. Set against the rest of the year, January is Alphen aan den Rijn's 10th-clearest and 1st-windiest month. For the whole year in context, see Alphen aan den Rijn's year-round climate.

Daytime high
12th warmest
Overnight low
2nd coldest
Precipitation
69 mm
13.3 wet days
Daylight
8 hours
8:51 AM – 4:50 PM
Cloud cover
74%
10th clearest
Wind
21 km/h
1st windiest
Solar energy
0.74 kWh/m²
Travel score
0.3
out of 10

Alphen aan den Rijn is Dutch city in the province of South Holland.

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

Temperature in January

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 6°C through the month.

A typical January day in Alphen aan den Rijn reaches about 6°C in the afternoon and slips back to 2°C overnight — a 3°C spread between the day's warmth and the night's chill. On most days the high lands between 1°C and 10°C. Set against its neighbours, January runs about 1°C cooler than December and on par with February.

-5°10°15°151015202531
Avg high (°C)Avg low (°C)
163
263
363
463
563
663
763
863
963
1063
1163
1263
1363
1463
1563
1663
1762
1862
1962
2062
2162
2262
2362
2462
2562
2662
2762
2862
2962
3062
3162

How January really feels in Alphen aan den Rijn

Once humidity and wind are folded in, January averages 0 days that feel above 32°C and 31 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
31
wind chill below the day's low

The story in January is cold — wind chill drags the overnight "feels like" below the raw low.

Alphen aan den Rijn weather by month

How January compares with the rest of the year at a glance. January is the 12th-warmest and 7th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / 6913.3180.3
Feb / 56111.49.50.5
Mar / 5511.20.711.51.7
Apr12° / 4910.7013.63.2
May16° / 10°6210.9015.44.8
Jun18° / 12°6611.7016.45.6
Jul21° / 15°8313.40166.0
Aug21° / 15°9013.3014.45.9
Sep18° / 13°8112.9012.45.3
Oct14° / 8413.7010.43.7
Nov10° / 7514.10.28.51.8
Dec / 801417.60.6

Cloud cover in January

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 14% of the time in January.

Beyond those clear spells, partly cloudy skies cover about 12% of January, with mostly cloudy or overcast conditions the remaining 74%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
12674
22674
32674
42674
52773
62773
72773
82773
92872
102872
112872
122872
132773
142773
152773
162674
172674
182674
192575
202575
212575
222476
232476
242476
252476
262476
272377
282476
292476
302476
312575

Chance of precipitation in January

Any precipitationSnow

Alphen aan den Rijn gets around 69 mm of rain and snow over 13.3 wet days in January. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable precipitation averages around 43% and peaks near 46% on the wettest days, and about 1 day brings snow. The odds ease toward the end of the month.

0%20%40%60%151015202531
Rain chance (%)Snow chance (%)
1463
2463
3463
4463
5463
6452
7452
8452
9452
10452
11442
12442
13443
14443
15443
16433
17433
18433
19424
20424
21424
22414
23414
24415
25405
26405
27395
28395
29385
30385
31385

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 21 km/h in January, the windiest month of the year.

Across January, daily wind ranges from about 20 km/h on the calmest days to 22 km/h at its breeziest. It stays fairly steady from day to day.

0510152025151015202531
Wind speed (km/h)Feels
122breezy
222breezy
322breezy
422breezy
522breezy
622breezy
722breezy
822breezy
922breezy
1022breezy
1122breezy
1222breezy
1322breezy
1422breezy
1521breezy
1621breezy
1721breezy
1821breezy
1921breezy
2021breezy
2121breezy
2221breezy
2321breezy
2421breezy
2521breezy
2621breezy
2721breezy
2821breezy
2920breezy
3020breezy
3120breezy

Sunrise & sunset in January

DaylightNight

Daylight runs from about 7 h 36 min at the start of January to 8 h 42 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 66 minutes over January. Sunrise moves from 8:58 AM to 8:34 AM, and sunset from 4:32 PM to 5:15 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
17.68:584:32
27.68:574:33
37.68:574:34
47.68:574:35
57.68:574:36
67.78:574:37
77.78:564:38
87.78:564:39
97.88:554:41
107.88:554:42
117.88:544:43
127.88:544:45
137.98:534:46
147.98:534:47
157.98:524:49
168.08:514:50
178.08:504:52
188.18:494:53
198.18:484:55
208.28:474:57
218.28:464:58
228.28:455:00
238.38:445:01
248.38:435:03
258.48:425:05
268.48:415:07
278.58:405:08
288.58:385:10
298.68:375:12
308.68:365:14
318.78:345:15

Solar energy in January

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in January, about 0.74 kWh/m².

For context, solar energy here swings from a low near 0.57 kWh/m² to a high of 5.51 kWh/m² in June across the year — January's 0.74 kWh/m² sits near the bottom.

00.511.52151015202531
Solar energy (kWh/m²)Level
10.6Dim
20.6Dim
30.6Dim
40.6Dim
50.6Dim
60.6Dim
70.6Dim
80.6Dim
90.7Dim
100.7Dim
110.7Dim
120.7Dim
130.7Dim
140.7Dim
150.7Dim
160.7Dim
170.8Dim
180.8Dim
190.8Dim
200.8Dim
210.8Dim
220.8Dim
230.8Dim
240.9Dim
250.9Dim
260.9Dim
270.9Dim
281.0Dim
291.0Dim
301.0Dim
311.0Dim
Planning a trip in January

Is January a good time to visit Alphen aan den Rijn?

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

0.3
Sightseeing
12th-best month of the year
0.0
Beach & pool
8th-best month of the year

January is a weaker month for outdoor sightseeing in Alphen aan den Rijn.

What to pack for Alphen aan den Rijn in January

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

In January, Alphen aan den Rijn sees daytime highs around 6°C and nights near 2°C. Pack a warm layer. Worth having: a heavy coat, rain gear and a windbreaker. About 13 days see rain.

a warm layera heavy coatrain geara windbreaker

Sea temperature near Alphen aan den Rijn in January

The nearest coast averages about 6°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 19°C and coldest in February near 5°C.

The water stays below 20°C all year — cool enough that most swimmers want a wetsuit.

5°10°15°20°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshing
Sea temperature (°C)Comfort
Jan6Bracing
Feb5Bracing
Mar6Bracing
Apr9Bracing
May12Bracing
Jun15Bracing
Jul18Cool
Aug19Cool
Sep18Cool
Oct15Bracing
Nov11Bracing
Dec8Bracing

UV index in Alphen aan den Rijn in January

LowModerateHighVery highExtreme

Clear-sky midday UV in January peaks around 1. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Alphen aan den Rijn peaks around July 14 at about 6 (high) — sunscreen and a hat are worth it in the middle of the day. It bottoms out near December 21 at about 1 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 6 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighModerateLowJul 14UV 6Dec 21UV 1
UV index (midday)Level
Jan1Low
Feb1Low
Mar3Moderate
Apr4Moderate
May5Moderate
Jun6High
Jul6High
Aug6High
Sep4Moderate
Oct2Moderate
Nov1Low
Dec1Low
Location & terrain

Where is Alphen aan den Rijn?

Alphen aan den Rijn sits at 52.1°N, 4.7°E, 1 m above sea level, in The Netherlands. The nearest listed city is Boskoop, 6.0 km away.

Topography around Alphen aan den Rijn

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Alphen aan den Rijn.

Within 3 km, the terrain around Alphen aan den Rijn has only modest variations in elevation — a maximum elevation change of 19 m around an average of 0 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 33 m; within 80 km, only modest variations in elevation — a maximum elevation change of 100 m.

The land around Alphen aan den Rijn is covered by grassland (42%) and artificial surfaces (34%) within 3 km, grassland (50%) and artificial surfaces (20%) within 16 km, and water (31%) and grassland (30%) within 80 km.

3 km
19 m
16 km
33 m
80 km
100 m
treesgrasslandcroplandartificial surfaceswaterwetland
January weather nearby: Boskoop 6.0 km · Bodegraven 8.0 km · Leiderdorp 9.0 km · Waddinxveen 9.0 km · Benthuizen 10 km · Merenwijk 11 km · Leiden 12 km · Gouda 13 km

The Netherlands travel facts

Travel advisory
Level 2
Exercise Increased Caution
Power plugs
Type C / F
230 V · 50 Hz
Prices
≈ 84% of US
price level, 2025
GDP per capita
$73,684
2025
Happiness
7.2 / 10
World Happiness, 2025
Safe drinking water
100%
of population, 2024
Homicide rate
0.7
per 100k, 2023
Road deaths
4
per 100k/yr, 2019
Income group
High
World Bank
English
Very high
EF EPI 624
Religion
none 54%Roman Catholic 20%Protestant 15%other 6%

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 Alphen aan den Rijn (52.1292°, 4.6555°, elevation 1 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).