Fredrikstad weather in August

In August, Fredrikstad sees average daytime highs of 20°C and overnight lows near 13°C, with 86 mm of rain across 12.4 wet days and about 15.2 hours of daylight. It is the 2nd-warmest and 2nd-wettest month of the year here.

Highs ease over the month, from about 22°C in the first days to 19°C by the end. The sky is clear or mostly clear about 28% 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 14 hours by month's end. Set against the rest of the year, August is Fredrikstad's 4th-clearest and 11th-windiest month. For the whole year in context, see Fredrikstad's year-round climate.

Daytime high
20°
2nd warmest
Overnight low
13°
11th coldest
Rainfall
86 mm
12.4 wet days
Daylight
15 h 18 min
4:43 AM – 7:58 PM
Cloud cover
62%
4th clearest
Wind
12 km/h
11th windiest
Solar energy
4.17 kWh/m²
Travel score
6.0
out of 10

Fredrikstad is settlement in Fredrikstad Municipality, Norway.

Air quality
Good
PM2.5 8.4 µg/m³ · 2019
Density
2,466/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 22°C in the first days to 19°C by the end.

A typical August day in Fredrikstad reaches about 20°C in the afternoon and slips back to 13°C overnight — a 8°C spread between the day's warmth and the night's chill. On most days the high lands between 17°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)
12214
22214
32214
42214
52114
62114
72114
82114
92114
102113
112113
122113
132113
142113
152113
162113
172113
182013
192013
202013
212012
222012
232012
242012
252012
261912
271912
281912
291911
301911
311911

How August really feels in Fredrikstad

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.

Fredrikstad weather by month

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

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / -3°6510.76.36.60.0
Feb / -3°508.55.98.80.0
Mar / -1°458.14.211.30.4
Apr11° / 478.51.214.12.6
May16° / 6110.30.216.64.8
Jun19° / 11°7811.2018.15.9
Jul21° / 13°7711.6017.56.3
Aug20° / 13°8612.4015.26.0
Sep16° / 8110.5012.65.0
Oct11° / 8711.60.69.82.4
Nov / 81122.27.30.4
Dec / -2°7011.44.55.90.0

Cloud cover in August

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 28% 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 52%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15050
24951
34951
44852
54852
64852
74753
84753
94753
104852
114852
124852
134852
144852
154753
164852
174951
184852
194852
204852
214852
224753
234852
244753
254654
264654
274753
284753
294753
304654
314753

Chance of precipitation in August

Any precipitation

Fredrikstad gets around 86 mm of rain over 12.4 wet days in August. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 39% and peaks near 41% on the wettest days.

0%10%20%30%40%50%151015202531
Rain chance (%)
138
239
339
440
540
641
741
841
941
1041
1141
1241
1341
1440
1540
1640
1740
1840
1939
2039
2139
2239
2339
2439
2539
2638
2738
2838
2938
3037
3137

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 61% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)
1464311
2474311
3474211
4474210
5484210
6494110
7504010
8513910
9523810
1054379
1155369
1256359
1356359
1457349
1559338
1659338
1760328
1862317
1962317
2064306
2165296
2266286
2368275
2469265
2571254
2672244
2773234
2874224
2977203
3078193
3179183

Wind in August

Winds average 12 km/h in August.

Across August, daily wind ranges from about 12 km/h on the calmest days to 13 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
112calm
212calm
312calm
412calm
512calm
612calm
712calm
812calm
912calm
1012calm
1112calm
1212calm
1312light breeze
1412light breeze
1512light breeze
1612light breeze
1712light breeze
1812light breeze
1912light breeze
2012light breeze
2112light breeze
2212light breeze
2312light breeze
2412light breeze
2512light breeze
2612light breeze
2712light breeze
2813light breeze
2913light breeze
3013light breeze
3113light breeze

Sunrise & sunset in August

DaylightNight

Daylight runs from about 16 h 30 min at the start of August to 14 hours by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 150 minutes over August. Sunrise moves from 4:08 AM to 5:18 AM, and sunset from 8:37 PM to 7:15 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
116.54:088:37
216.44:108:34
316.34:138:32
416.24:158:29
516.24:178:27
616.14:198:25
716.04:228:22
815.94:248:19
915.84:268:17
1015.84:298:14
1115.74:318:12
1215.64:338:09
1315.54:358:06
1415.44:388:04
1515.34:408:01
1615.34:437:58
1715.24:457:55
1815.14:477:53
1915.04:507:50
2014.94:527:47
2114.84:547:44
2214.74:577:41
2314.74:597:38
2414.65:017:36
2514.55:047:33
2614.45:067:30
2714.35:087:27
2814.25:117:24
2914.15:137:21
3014.05:157:18
3114.05:187:15

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 4.17 kWh/m².

For context, solar energy here swings from a low near 0.23 kWh/m² to a high of 5.74 kWh/m² in June across the year — August's 4.17 kWh/m² falls in the middle.

024151015202531
Solar energy (kWh/m²)Level
14.8Bright
24.8Bright
34.8Bright
44.7Bright
54.7Bright
64.6Bright
74.6Bright
84.5Bright
94.5Bright
104.4Bright
114.4Bright
124.4Bright
134.3Bright
144.3Bright
154.2Bright
164.2Bright
174.2Bright
184.1Bright
194.1Bright
204.0Bright
214.0Moderate
223.9Moderate
233.9Moderate
243.8Moderate
253.8Moderate
263.7Moderate
273.6Moderate
283.6Moderate
293.5Moderate
303.5Moderate
313.4Moderate
Planning a trip in August

Is August a good time to visit Fredrikstad?

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

6.0
Sightseeing
2nd-best month of the year
3.4
Beach & pool
2nd-best month of the year

August is a reasonable time to visit Fredrikstad for sightseeing.

What to pack for Fredrikstad in August

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

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

rain gear

Sea temperature near Fredrikstad 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 offshore 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 Fredrikstad 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 Fredrikstad peaks around June 23 at about 5 (moderate) — a little sun protection helps at midday. It bottoms out near January 1 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 23UV 5Jan 1UV 0
UV index (midday)Level
Jan0Low
Feb1Low
Mar2Low
Apr3Moderate
May4Moderate
Jun5Moderate
Jul5Moderate
Aug5Moderate
Sep3Moderate
Oct1Low
Nov0Low
Dec0Low
Location & terrain

Where is Fredrikstad?

Fredrikstad sits at 59.2°N, 10.9°E, 6 m above sea level, in Norway. The nearest listed city is Sarpsborg, 13 km away.

Topography around Fredrikstad

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

Within 3 km, the terrain around Fredrikstad has only modest variations in elevation — a maximum elevation change of 113 m around an average of 25 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 151 m; within 80 km, large variations in elevation — a maximum elevation change of 863 m.

The land around Fredrikstad is covered by trees (43%) and artificial surfaces (28%) within 3 km, trees (37%) and water (36%) within 16 km, and trees (57%) and water (30%) within 80 km.

3 km
113 m
16 km
151 m
80 km
863 m
treesgrasslandcroplandartificial surfaceswaterwetland
August weather nearby: Sarpsborg 13 km · Halden 28 km · Moss 29 km · Tønsberg 30 km · Horten 34 km · Sandefjord 42 km · Larvik 54 km · Drammen 71 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 Fredrikstad (59.2181°, 10.9298°, elevation 6 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).