AI-generatedHafnarfjörður at a glance
- Best time
- Apr – Aug
- Warmest month
- Jul · 14°
- Warmest sea
- Aug · 11.6°
- Sunshine a year
- 1,370 h
- Rain a year
- 1,268 mm
- Climate
- Maritime
- Time zone
- UTC+0
- Elevation
- 39 m
Climate in Hafnarfjörður
Hafnarfjörður has a maritime climate with moderate summers and cool, often grey winters. July is the warmest month with average highs of 14 °C, while January is the coolest at 1 °C. With around 1,370 hours of sunshine a year, Hafnarfjörður is rather dull; May is the sunniest month with 6.7 hours a day.
Holiday weather through the year
Weather in October
Holiday weather in October
Poor
Best time to visit: April – August
Keep in mindFrequent rain
A typical day in October
- Morning, 08:00: about 2°
- Midday, 13:00: about 5°
- Afternoon, 16:00: about 6°
- Evening, 20:00: about 4°
- Night, 23:00: about 3°
08:1418:12
Cold evenings: bring a warm jacket.
Estimated from the average high and low: coolest around sunrise, warmest in mid-afternoon.
Light for photos in October
- Golden hour
- Morning 07:45–09:24 · evening 17:03–18:42
- Blue hour
- Morning 07:26–07:45 · evening 18:42–19:01
Golden hour: the sun between 4° below and 6° above the horizon; blue hour: 6° to 4° below it. Times for the 15th of the month; mountains and clouds shift the light.
What is the weather like in Hafnarfjörður in October?
In October, Hafnarfjörður is cold: daytime highs average 6 °C, and nights cool down to about 2 °C. The sea averages 8.5 °C – swimming is only for the hardy. The sun is scarce, with only about 3 hours a day. It rains often – on about 15 days, adding up to 119 mm. Snow falls on about 2 days. All in all, October is not an ideal month for a holiday in Hafnarfjörður.
More details for October
- Daylight
- 9 h 58 min08:14 – 18:12
- UV index
- 1 · lowclear sky, noon (estimate)All months
- Muggy days
- 0 daysdew point 18 °C or moreAll months
- Wind
- 26 km/haverage daily peakAll months
- Cloud cover
- 71 %on averageAll months
- Hot days
- 0 days30 °C or more
- Snow days
- 2 days1 cm or more of fresh snowAll months
- Time zone
- UTC+0Atlantic/Reykjavik
How the score comes together
- Temperatureweight 35 %0 %
- Seaweight 25 %0 %
- Sunshineweight 20 %0 %
- Few rainy daysweight 20 %19 %
Each factor is rated from 0 to 100 % and weighted for the travel style “Sun, sea & sand”.
What to pack in October
- Warm jacket
- Rain jacket or umbrella
Sea temperature in Hafnarfjörður
Monthly sea surface temperature with the range of cooler and warmer years.
8 in 10 years: 7.8 – 9.4 °C
Swimming season: Never above 20 °C
- cold
- fresh
- refreshing
- pleasant
- warm
- very warm
The sea temperature in Hafnarfjörður ranges from 4.9 °C in March to 11.6 °C in August. Even at its warmest the sea stays below 20 °C, so swimming is bracing at best.
The sea warms up slowly: it is warmest in August, while the air already peaks in July. From October to March the sea is even warmer than the afternoon air. The sea temperature varies from year to year: in August, eight out of ten years were between 10.8 and 12.4 °C.
| Month | Average | Cool year | Warm year | Feels |
|---|---|---|---|---|
| JanuaryJan | 5.3° | 4.6° | 5.9° | cold |
| FebruaryFeb | 5.0° | 4.1° | 5.7° | cold |
| MarchMar | 4.9° | 4.3° | 5.6° | cold |
| AprilApr | 5.7° | 5.0° | 6.2° | cold |
| MayMay | 7.4° | 6.9° | 8.1° | cold |
| JuneJun | 9.7° | 8.7° | 10.7° | cold |
| JulyJul | 11.3° | 10.7° | 12.2° | cold |
| AugustAug | 11.6° | 10.8° | 12.4° | cold |
| SeptemberSep | 10.2° | 9.6° | 11.0° | cold |
| OctoberOct | 8.5° | 7.8° | 9.4° | cold |
| NovemberNov | 6.9° | 6.3° | 7.5° | cold |
| DecemberDec | 5.8° | 5.0° | 6.4° | cold |
Sunshine hours in Hafnarfjörður
Average hours of bright sunshine per day, next to the length of the day. Tap a month to select it.
In October, the sun shines for about 3.0 of 10.0 hours of daylight in Hafnarfjörður, 30 % of the day.
Sunshine hours: measured at the weather station 7 km away, averages 1991–2020 (WMO climate normals). Daylight is the time from sunrise to sunset on the 15th of the month.
UV index in Hafnarfjörður
How strong the sun is at noon, month by month, and how quickly unprotected skin burns.
- Clear-sky UV in October
- 1 · lowLittle protection needed; sunglasses on bright days.
The sun is strongest in June (UV 5).
Minutes until sunburn in October
- Very fair skin
- over 2 h
- Fair skin
- over 2 h
- Light brown skin
- over 2 h
- Olive skin
- over 2 h
Rough guide for unprotected skin at noon under a clear sky; clouds lengthen it, water, sand and snow shorten it. Sunscreen extends the time only partly.
Monthly values: clear-sky noon estimate from the sun's angle, ozone and altitude. UV today: Open-Meteo forecast.
Rain in Hafnarfjörður: rainy days and rainfall
A rainy day is a day with at least 1 mm of rain or snow; the amount is what falls in the whole month. Tap a month to select it.
In October, Hafnarfjörður has about 15 rainy days with 119 mm of rain in total.
Wind and clouds in Hafnarfjörður
How breezy and how cloudy Hafnarfjörður is through the year. Tap a month to select it on the whole page.
Wind
Typical daily peak of the wind in km/h: what the afternoon breeze usually reaches, not the gusts.
In October, the wind in Hafnarfjörður typically peaks at 26 km/h during the day: Beaufort 4, moderate breeze.
Breezy months for windsurfing and kiting
From Beaufort 4 (20 km/h) the daily breeze is usually enough for windsurfing and often for kiting, and here it gets there all year.
Clouds
Average share of the sky covered by cloud, day and night.
In October, cloud covers on average 71 % of the sky over Hafnarfjörður: mostly cloudy, with about 3.0 hours of sunshine a day.
Wind: mean daily maximum of the hourly wind 10 m above ground (ERA5, 1996–2025). Gusts are stronger, and the model grid of about 28 km smooths out local effects such as capes and valley winds. Clouds: mean total cloud cover of all layers over day and night (ERA5, 1996–2025). Thin high cloud counts as cover even when the sun still shines through.
Snow in Hafnarfjörður
When Hafnarfjörður is likely to be white: the chance of seeing snow during a week's stay, the days with fresh snow and how much falls. Tap a month to select it.
Snow calendar
- hardly any
- possible
- likely
- very likely
In October, Hafnarfjörður has about 2 days with at least 1 cm of fresh snow, 6 cm in total. The chance of seeing snow during a week's stay is 20 out of 100: possible.
Snow days bring at least 1 cm of fresh snow. Fresh snow comes from ERA5 snowfall (1996–2025) at the height of the place, not on the slopes above it; the snow chance also weighs whether the snow settles. An estimate from climate averages, not a snow report.
Climate through the year
Long-term monthly averages. Tap a month to see its details.
Nights and sleep in Hafnarfjörður
How warm the nights get in each month, from the mean night-time low. Tap a month for details.
- Frost below 0°
- Cold 0–8°
- Cool 8–15°
ColdOctober: nights around 2°. The room should be heated.
The coolest nights are in January (−4°), the warmest in July (9°). Nights fall below 8 °C on average from September to June, so the room should be heated.
Temperatures through the year
Average daytime high, night-time low and sea temperature per month.
| Month | Score | Day | Night | Sea | Sun | Rain days | Rain mm |
|---|---|---|---|---|---|---|---|
| JanuaryJan | 0 | 1° | −4° | 5.3° | 0.7 h | 18 | 120 |
| FebruaryFeb | 2 | 1° | −4° | 5.0° | 2.2 h | 17 | 119 |
| MarchMar | 3 | 3° | −3° | 4.9° | 3.6 h | 17 | 113 |
| AprilApr | 11 | 6° | 0° | 5.7° | 5.5 h | 16 | 98 |
| MayMay | 16 | 9° | 3° | 7.4° | 6.7 h | 16 | 88 |
| JuneJun | 16 | 12° | 7° | 9.7° | 6.3 h | 14 | 74 |
| JulyJul | 16 | 14° | 9° | 11.3° | 5.9 h | 14 | 79 |
| AugustAug | 12 | 13° | 8° | 11.6° | 5.3 h | 15 | 97 |
| SeptemberSep | 3 | 10° | 6° | 10.2° | 3.9 h | 18 | 134 |
| OctoberOct | 4 | 6° | 2° | 8.5° | 3.0 h | 15 | 119 |
| NovemberNov | 3 | 3° | −1° | 6.9° | 1.3 h | 16 | 109 |
| DecemberDec | 1 | 1° | −3° | 5.8° | 0.4 h | 17 | 118 |
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0). Sources & licences
64.07° N, 21.94° W · 39 m · Atlantic/Reykjavik
Best time to visit Hafnarfjörður
The best time to visit Hafnarfjörður is from April to August. The sea stays too cool for a classic beach holiday: even in August it only reaches 11.6 °C. The wettest month is September with 134 mm of precipitation.
Hafnarfjörður through the seasons
How the weather changes over the seasons, with averages for each.
Hafnarfjörður in spring
Mar – May
Poor
- 3–9 °C by day
- Sea 6 °C
- 5 h of sun a day
- 49 rainy days in all
Hafnarfjörður in summer
Jun – Aug
Poor
- 12–14 °C by day
- Sea 11 °C
- 6 h of sun a day
- 43 rainy days in all
Hafnarfjörður in autumn
Sep – Nov
Poor
- 3–10 °C by day
- Sea 9 °C
- 3 h of sun a day
- 49 rainy days in all
Hafnarfjörður in winter
Dec – Feb
Poor
- 1 °C by day
- Sea 5 °C
- 1 h of sun a day
- 52 rainy days in all
Find your perfect month
Tell us what you like and we rate every month in Hafnarfjörður for you.
Your best months: May – July
Based on the climate averages; tap a month to see its details.
Compare two months in Hafnarfjörður
Pick two months to see how the weather differs. A tick marks the clearly better value; for temperatures it depends on your plans.
May has the better holiday weather in Hafnarfjörður: score 16 against 4. In May, days are 3 °C warmer than in October. The sea is 1 °C cooler in May. May has one more rainy day. The sun shines 4 hours longer a day in May.
| Month | October | May |
|---|---|---|
| Weather score | 4 | 16better |
| Day high | 6° | 9° |
| Night low | 2° | 3° |
| Sea | 8.5° | 7.4° |
| Sunshine | 3.0 h | 6.7 hbetter |
| Rainy days | 15better | 16 |
| Rainfall | 119 mm | 88 mmbetter |
Based on the climate averages 1996–2025.
Which month for what?
Beach & swimming
No month
Sea from 21 °C, warm and mostly dry
Sightseeing & hiking
No month
15–28 °C and not too much rain
Rainy months
All year
12 or more rainy days
Snow
Nov – Apr
Snow on 2 or more days
Hafnarfjörður month by month
The typical weather for every month at a glance.
0January1° · Sea 5° · 1 h
In January, Hafnarfjörður is freezing cold: daytime highs average 1 °C, and nights often drop below freezing (−4 °C). The sea averages 5.3 °C – swimming is only for the hardy. The sun is scarce, with only about 1 hours a day. Precipitation, often as snow, falls on about 18 days, totalling 120 mm. Snow falls on about 8 days. It is often windy, with gusts of around 30 km/h. All in all, January is not an ideal month for a holiday in Hafnarfjörður.
Hafnarfjörður in January2February1° · Sea 5° · 2 h
In February, Hafnarfjörður is freezing cold: daytime highs average 1 °C, and nights often drop below freezing (−4 °C). The sea averages 5.0 °C – swimming is only for the hardy. The sun is scarce, with only about 2 hours a day. Precipitation, often as snow, falls on about 17 days, totalling 119 mm. Snow falls on about 9 days. It is often windy, with gusts of around 31 km/h. All in all, February is not an ideal month for a holiday in Hafnarfjörður.
Hafnarfjörður in February3March3° · Sea 5° · 4 h
In March, Hafnarfjörður is freezing cold: daytime highs average 3 °C, and nights often drop below freezing (−3 °C). The sea averages 4.9 °C – swimming is only for the hardy. The sun is scarce, with only about 4 hours a day. Precipitation, often as snow, falls on about 17 days, totalling 113 mm. Snow falls on about 8 days. It is often windy, with gusts of around 28 km/h. All in all, March is not an ideal month for a holiday in Hafnarfjörður.
Hafnarfjörður in March11April6° · Sea 6° · 6 h
In April, Hafnarfjörður is cold: daytime highs average 6 °C, and nights cool down to about 0 °C. The sea averages 5.7 °C – swimming is only for the hardy. Expect around 6 hours of sunshine a day. It rains often – on about 16 days, adding up to 98 mm. Snow falls on about 3 days. All in all, April is not an ideal month for a holiday in Hafnarfjörður.
Hafnarfjörður in April16May9° · Sea 7° · 7 h
In May, Hafnarfjörður is cold: daytime highs average 9 °C, and nights cool down to about 3 °C. The sea averages 7.4 °C – swimming is only for the hardy. The sun shines for around 7 hours a day. It rains often – on about 16 days, adding up to 88 mm. All in all, May is not an ideal month for a holiday in Hafnarfjörður.
Hafnarfjörður in May16June12° · Sea 10° · 6 h
In June, Hafnarfjörður is cool: daytime highs average 12 °C, and nights cool down to about 7 °C. The sea averages 9.7 °C – swimming is only for the hardy. Expect around 6 hours of sunshine a day. It rains often – on about 14 days, adding up to 74 mm. All in all, June is not an ideal month for a holiday in Hafnarfjörður.
Hafnarfjörður in June16July14° · Sea 11° · 6 h
In July, Hafnarfjörður is cool: daytime highs average 14 °C, and nights cool down to about 9 °C. The sea averages 11.3 °C – swimming is only for the hardy. Expect around 6 hours of sunshine a day. Rain is frequent, with about 14 rainy days and 79 mm in total. All in all, July is not an ideal month for a holiday in Hafnarfjörður.
Hafnarfjörður in July12August13° · Sea 12° · 5 h
In August, Hafnarfjörður is cool: daytime highs average 13 °C, and nights cool down to about 8 °C. The sea averages 11.6 °C – swimming is only for the hardy. Expect around 5 hours of sunshine a day. It rains often – on about 15 days, adding up to 97 mm. All in all, August is not an ideal month for a holiday in Hafnarfjörður.
Hafnarfjörður in August3September10° · Sea 10° · 4 h
In September, Hafnarfjörður is cool: daytime highs average 10 °C, and nights cool down to about 6 °C. The sea averages 10.2 °C – swimming is only for the hardy. The sun is scarce, with only about 4 hours a day. It rains often – on about 18 days, adding up to 134 mm. All in all, September is not an ideal month for a holiday in Hafnarfjörður.
Hafnarfjörður in September4October6° · Sea 9° · 3 h
In October, Hafnarfjörður is cold: daytime highs average 6 °C, and nights cool down to about 2 °C. The sea averages 8.5 °C – swimming is only for the hardy. The sun is scarce, with only about 3 hours a day. It rains often – on about 15 days, adding up to 119 mm. Snow falls on about 2 days. All in all, October is not an ideal month for a holiday in Hafnarfjörður.
Hafnarfjörður in October3November3° · Sea 7° · 1 h
In November, Hafnarfjörður is freezing cold: daytime highs average 3 °C, and nights often drop below freezing (−1 °C). The sea averages 6.9 °C – swimming is only for the hardy. The sun is scarce, with only about 1 hours a day. Precipitation, often as snow, falls on about 16 days, totalling 109 mm. Snow falls on about 3 days. All in all, November is not an ideal month for a holiday in Hafnarfjörður.
Hafnarfjörður in November1December1° · Sea 6° · 0 h
In December, Hafnarfjörður is freezing cold: daytime highs average 1 °C, and nights often drop below freezing (−3 °C). The sea averages 5.8 °C – swimming is only for the hardy. The sun is scarce, with only about 0 hours a day. Precipitation, often as snow, falls on about 17 days, totalling 118 mm. Snow falls on about 8 days. It is often windy, with gusts of around 29 km/h. All in all, December is not an ideal month for a holiday in Hafnarfjörður.
Hafnarfjörður in DecemberHafnarfjörður compared
Put Hafnarfjörður side by side with another destination.
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Hafnarfjörður vs. Reykjavík
In October the holiday weather in Hafnarfjörður and Reykjavík is about equally good (score 4 vs. 4). During the day it is about as warm in Reykjavík as in Hafnarfjörður. The sea is about equally warm.
| in October | Hafnarfjörður | Reykjavík |
|---|---|---|
| Holiday score | 4 | 4 |
| Daytime high | 6° | 6° |
| Sea | 9° | 9° |
| Sunshine | 3 h | 3 h |
| Rainy days | 15 | 15 |
| Best time | Apr – Aug | Jul |
Through the year
Iceland in October: the best places
In October, Hafnarfjörður ranks 2 of 5 destinations in this country.
- Reykjavík6°9°6
- 2HafnarfjörðurThis page6°9°4
- 3Grindavík7°9°4
- 4Ísafjörður5°7°0
- 5Akureyri4°7°0
Planning a trip to Hafnarfjörður
Weather for your travel dates
Pick your arrival and length of stay, and we sum up the weather to expect.
Hafnarfjörður in the school holidays
How the weather suits the usual holiday periods. Dates vary by school and region, so each holiday uses the months it usually falls in.
Hafnarfjörður has its best school-holiday weather during May half-term (score 16) and its weakest during the Christmas holidays (score 1).
- 9
Easter holidays
Mar – Apr
Poor
- 5 °C by day
- Sea 5 °C
- 4.9 h of sun a day
- 17 rainy days a month
Keep in mind: Frequent rain, Snow
- 16
May half-term
May – Jun
PoorBest holidays
- 10 °C by day
- Sea 8 °C
- 6.6 h of sun a day
- 15 rainy days a month
Keep in mind: Frequent rain
- 13
Summer holidays
Jul – Aug
Poor
- 14 °C by day
- Sea 11 °C
- 5.5 h of sun a day
- 15 rainy days a month
Keep in mind: Frequent rain
- 4
October half-term
Oct
Poor
- 6 °C by day
- Sea 9 °C
- 3.0 h of sun a day
- 15 rainy days a month
Keep in mind: Frequent rain
- 1
Christmas holidays
Dec – Jan
Poor
- 1 °C by day
- Sea 6 °C
- 0.6 h of sun a day
- 18 rainy days a month
Keep in mind: Frequent rain, Snow
Based on the climate averages 1996–2025.
Getting there
Flying from
- Nonstop flight
- about 2 h 45 min
- Distance
- 1,880 km
- Time zone
- UTC+0
- Jet lag
- Hardly any (under 3 h)
Estimated from the straight-line distance: 30 minutes for take-off and landing plus 830 km/h cruising speed.
Frequently asked questions about Hafnarfjörður
When is the best time to visit Hafnarfjörður?
The best time to visit Hafnarfjörður is from April to August. That is when the holiday weather score, which combines temperature, sea, sunshine and rain, is highest.
How warm is the sea in Hafnarfjörður?
The sea temperature in Hafnarfjörður ranges from 4.9 °C in March to 11.6 °C in August. Even at its warmest the sea stays below 20 °C, so swimming is bracing at best.
Can you swim in Hafnarfjörður in October?
Only if you don't mind cold water: in October the sea averages just 8.5 °C. Comfortable swimming temperatures are not reached at any time of year.
What is the warmest month in Hafnarfjörður?
July is the warmest month, with average highs of 14 °C and nights around 9 °C. January is the coolest month at 1 °C.
When does it rain most in Hafnarfjörður?
The wettest month is September with 134 mm of precipitation. The driest month is June with 74 mm.
How many hours of sunshine does Hafnarfjörður get?
Hafnarfjörður gets around 1,370 hours of sunshine a year. The sunniest month is May with 6.7 hours a day; in December there are 0.4 hours a day.
What time zone is Hafnarfjörður in?
Hafnarfjörður uses the time zone Atlantic/Reykjavik, which matches UTC all year.
How long is the flight from London to Hafnarfjörður?
A nonstop flight from London to Hafnarfjörður takes about 2 h 45 min, for a straight-line distance of about 1,880 km.
Which school holidays are best for Hafnarfjörður?
Hafnarfjörður has its best school-holiday weather during May half-term (score 16) and its weakest during the Christmas holidays (score 1). Holiday ratings (0–100): Easter holidays 9, May half-term 16, Summer holidays 13, October half-term 4, Christmas holidays 1.
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