Halden weather in August

In August, Halden sees average daytime highs of 20°C and overnight lows near 12°C, with 94 mm of rain across 13.3 wet days and about 15.2 hours of daylight. It is the 2nd-warmest and 1st-wettest month of the year here.

Highs ease over the month, from about 21°C in the first days to 18°C by the end. The sky is clear or mostly clear about 25% of the time in August, and the air most often feels dry.

Daylight stretches from about 16 h 30 min at the start of August to 13 h 54 min by month's end. Set against the rest of the year, August is Halden's 5th-clearest and 11th-windiest month. For the whole year in context, see Halden's year-round climate.

Daytime high
20°
2nd warmest
Overnight low
12°
11th coldest
Rainfall
94 mm
13.3 wet days
Daylight
15 h 12 min
4:41 AM – 7:56 PM
Cloud cover
63%
5th clearest
Wind
11 km/h
11th windiest
Solar energy
4.27 kWh/m²
Travel score
5.8
out of 10

Halden is urban area in Halden Municipality, Norway.

Air quality
Good
PM2.5 9.2 µg/m³ · 2018
Density
1,565/km²
people per km²

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

Temperature in August

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 21°C in the first days to 18°C by the end.

A typical August day in Halden reaches about 20°C in the afternoon and slips back to 12°C overnight — a 8°C spread between the day's warmth and the night's chill. On most days the high lands between 16°C and 25°C. Set against its neighbours, August runs about 1°C cooler than July and about 4°C warmer than September.

10°15°20°25°30°151015202531
Avg high (°C)Avg low (°C)
12113
22113
32113
42113
52113
62113
72113
82113
92113
102113
112112
122112
132112
142012
152012
162012
172012
182012
192012
202012
212012
222011
231911
241911
251911
261911
271911
281911
291811
301810
311810

How August really feels in Halden

Once humidity and wind are folded in, August 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

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

Halden weather by month

How August compares with the rest of the year at a glance. August is the 2nd-warmest and 1st-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / -3°64116.86.60.0
Feb / -4°498.76.18.80.0
Mar / -2°438.64.611.30.3
Apr10° / 499.21.514.12.5
May15° / 63110.316.64.7
Jun19° / 10°8812.10185.7
Jul21° / 12°8411.7017.46.2
Aug20° / 12°9413.3015.25.8
Sep16° / 7911.4012.64.6
Oct10° / 8212.10.59.82.2
Nov / 7211.92.67.40.3
Dec / -2°6811.64.860.0

Cloud cover in August

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 25% of the time in August.

Beyond those clear spells, partly cloudy skies cover about 20% of August, with mostly cloudy or overcast conditions the remaining 55%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14654
24654
34654
44555
54456
64456
74555
84555
94555
104555
114555
124654
134555
144654
154753
164753
174654
184654
194555
204555
214555
224555
234456
244456
254357
264456
274456
284357
294456
304456
314456

Chance of precipitation in August

Any precipitation

Halden gets around 94 mm of rain over 13.3 wet days in August, the wettest month. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 43% and peaks near 43% on the wettest days.

0%10%20%30%40%50%151015202531
Rain chance (%)
140
241
341
442
542
643
743
843
943
1043
1143
1243
1343
1442
1542
1642
1742
1843
1943
2043
2143
2243
2343
2443
2543
2643
2743
2843
2943
3043
3142

Humidity in August

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, August lands in the dry band about 63% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)
154388
254388
354388
454388
554388
655387
755387
855387
957376
1057376
1157376
1259365
1359365
1459365
1560355
1661345
1762344
1863334
1964324
2065314
2166304
2267294
2368284
2470273
2572253
2673243
2775223
2876213
2978193
3079183
3181172

Wind in August

Winds average 11 km/h in August.

Across August, daily wind ranges from about 11 km/h on the calmest days to 12 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
111calm
211calm
311calm
411calm
511calm
611calm
711calm
811calm
911calm
1011calm
1111calm
1211calm
1311calm
1411calm
1511calm
1611calm
1711calm
1811calm
1911calm
2011calm
2112calm
2212calm
2312calm
2412calm
2512calm
2612calm
2712calm
2812calm
2912calm
3012calm
3112calm

Sunrise & sunset in August

DaylightNight

Daylight runs from about 16 h 30 min at the start of August to 13 h 54 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 156 minutes over August. Sunrise moves from 4:07 AM to 5:16 AM, and sunset from 8:34 PM to 7:13 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
116.54:078:34
216.44:098:32
316.34:118:29
416.24:138:27
516.14:168:25
616.14:188:22
716.04:208:20
815.94:238:17
915.84:258:15
1015.74:278:12
1115.74:298:09
1215.64:328:07
1315.54:348:04
1415.44:368:01
1515.34:397:59
1615.24:417:56
1715.24:437:53
1815.14:467:51
1915.04:487:48
2014.94:507:45
2114.84:537:42
2214.74:557:39
2314.64:577:36
2414.65:007:33
2514.55:027:31
2614.45:047:28
2714.35:077:25
2814.25:097:22
2914.15:117:19
3014.05:147:16
3113.95:167:13

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 4.27 kWh/m².

For context, solar energy here swings from a low near 0.23 kWh/m² to a high of 5.85 kWh/m² in June across the year — August's 4.27 kWh/m² falls in the middle.

024151015202531
Solar energy (kWh/m²)Level
15.0Bright
24.9Bright
34.9Bright
44.8Bright
54.8Bright
64.7Bright
74.7Bright
84.6Bright
94.6Bright
104.5Bright
114.5Bright
124.5Bright
134.4Bright
144.4Bright
154.3Bright
164.3Bright
174.3Bright
184.2Bright
194.2Bright
204.1Bright
214.0Bright
224.0Bright
233.9Moderate
243.9Moderate
253.8Moderate
263.8Moderate
273.7Moderate
283.7Moderate
293.6Moderate
303.5Moderate
313.5Moderate
Planning a trip in August

Is August a good time to visit Halden?

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

5.8
Sightseeing
2nd-best month of the year
3.0
Beach & pool
2nd-best month of the year

August is a reasonable time to visit Halden for sightseeing.

What to pack for Halden in August

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

In August, Halden sees daytime highs around 20°C and nights near 12°C. Worth packing: rain gear. About 13 days see rain.

rain gear

Sea temperature near Halden in August

The nearest coast averages about 18°C in August — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 29 km away) is warmest in August at about 18°C and coldest in February near 3°C.

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

0°5°10°15°20°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshing
Sea temperature (°C)Comfort
Jan4Bracing
Feb3Bracing
Mar3Bracing
Apr6Bracing
May11Bracing
Jun15Bracing
Jul18Cool
Aug18Cool
Sep15Cool
Oct12Bracing
Nov9Bracing
Dec6Bracing

UV index in Halden in August

LowModerateHighVery highExtreme

Clear-sky midday UV in August peaks around 5 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Halden peaks around June 20 at about 5 (moderate) — a little sun protection helps at midday. It bottoms out near December 19 at about 0 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 4 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateLowJun 20UV 5Dec 19UV 0
UV index (midday)Level
Jan0Low
Feb1Low
Mar2Low
Apr3Moderate
May4Moderate
Jun5Moderate
Jul5Moderate
Aug5Moderate
Sep3Moderate
Oct1Low
Nov0Low
Dec0Low
Location & terrain

Where is Halden?

Halden sits at 59.1°N, 11.4°E, 15 m above sea level, in Norway. The nearest listed city is Sarpsborg, 24 km away.

Topography around Halden

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

Within 3 km, the terrain around Halden has only modest variations in elevation — a maximum elevation change of 196 m around an average of 72 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 260 m; within 80 km, significant variations in elevation — a maximum elevation change of 421 m.

The land around Halden is covered by trees (51%) within 3 km, trees (70%) within 16 km, and trees (58%) and water (28%) within 80 km.

3 km
196 m
16 km
260 m
80 km
421 m
treesgrasslandcroplandartificial surfaceswater
August weather nearby: Sarpsborg 24 km · Fredrikstad 28 km · Moss 54 km · Tønsberg 58 km · Horten 61 km · Sandefjord 67 km · Larvik 78 km · Uddevalla 92 km

Norway travel facts

Travel advisory
Level 1
Exercise Normal Precautions
Power plugs
Type C / F
230 V · 50 Hz
Prices
≈ 91% of US
price level, 2025
GDP per capita
$94,594
2025
Happiness
7.2 / 10
World Happiness, 2025
Safe drinking water
99%
of population, 2024
Homicide rate
0.7
per 100k, 2023
Road deaths
2.1
per 100k/yr, 2019
Income group
High
World Bank
English
Very high
EF EPI 613
Religion
Church of Norway 68%other Christian 4%Muslim 3%Roman Catholic 3%

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 Halden (59.1248°, 11.3875°, elevation 15 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).