Your March weather guide
CoolWeather in Kefalonia in March
Kefalonia in March suits a mild-weather break, not a beach holiday. Daytime highs average 15°C, there are about 10 rainy days, and the sea is around 15°C. For a UK traveller, the appeal is being outdoors without summer heat, provided you are happy to work around rain. Pack for changeable spring weather rather than warmth you can rely on, and choose March only if swimming and long spells in beachwear are not priorities.
Long-term climate averages for Argostoli, not a forecast · 1991-2020
Kefalonia, month by month
Your snapshot
At a glance
The useful details for Argostoli.
- Average daytime high
- 14.9°C
- 9 in 10 days stay below 17°C
- Average night-time low
- 11.8°C
- coldest 10% of nights: 9°C or lower
- Compared with London
- +4.4°C
- London averages 10.5°C in March
- Sea temperature
- 15.1°C
- year to year: 14°C to 16°C
- Sunshine per day (est.)
- 6.4h
- 55% of 11.7 h of daylight
- Rainy days (1 mm+)
- 10
- 78 mm over the month
- Humidity
- 74%
- Days over 25°C
- 0%
- none over 30°C
- Record high 1991-2020
- 21.5°C
- 2001-03-27
- Record low 1991-2020
- 4.8°C
- 2020-03-17
- Flight from London
- ≈ 3 h 30 min
- 2166 km, short-haul (estimate for a direct flight)
Records are observed extremes within 1991-2020, not typical holiday conditions. Warm-day percentages are shares of days, not day counts.
How March compares
March is the 9th warmest month of the year in Kefalonia and ranks 98th of 134 destinations we compare for March - see where else is hot in March. Within Greece it is 26th of 44 (Greece in March). Against London's average high of 10.5°C in March, Kefalonia is 4.4°C warmer by day and 8.5°C warmer at night.
Daytime and night-time in March
The typical March day in Kefalonia peaks at 14.9°C, but that is an average: the warmest 10% of days reach 17.3°C or more. Days over 25°C are rare. Nights average 11.8°C; one night in ten drops to 8.8°C or lower, so pack a layer for evenings - it is genuinely cool after dark. Between 1991 and 2020 the hottest March day here reached 21.5°C (2001-03-27) and the coldest night 4.8°C (2020-03-17).
Rain in March
Wet (more than 8 rainy days): about 10 days with 1 mm or more, 78 mm in total. Year to year it varies a lot - the wettest March was 2014 with 169 mm, the driest 1994 with 12 mm. Humidity averages 74%.
Sea temperature in March
The sea averages 15.1°C - too cold for most (under 18°c). Depending on the year it ranges from 14.4°C to 15.8°C. For the warmest sea here, come in August (26.0°C).
Sunshine and daylight
Around 6.4 hours of sunshine a day (estimated from cloud cover), 11.7 hours of daylight: the sun rises about 06:49 and sets about 18:45 local time in mid-March. Average cloud cover is 46%.
Is March a good time to visit Kefalonia?
March is not the strongest month here: cool days and frequent rain. The best months for Kefalonia on our scoring are July, August, June; months averaging 25°C or more: Jul, Aug, Sep.
Comfortable for walking, cool for sitting out
March is better suited to walking than lying in the sun. An average daytime high of 15°C means light layers are more useful than a suitcase built around shorts and swimwear. Warmer days reach around 17°C or above, but do not plan on summer-like heat: days reaching 25°C account for 0% of the month. Nights average around 12°C, with the coldest dropping to about 9°C or below. Bring a jumper and a jacket for evenings, and keep a layer handy when you stop moving outdoors. If dependable warmth is the main reason for your trip, March is not a strong choice.
Keep plans flexible and treat the sea as cold
Rain is a meaningful part of the March trade-off, with about 10 days receiving measurable rainfall. That does not mean every wet day is lost, but it does make a rigid outdoor schedule a poor fit. Bring a waterproof jacket and footwear you are comfortable wearing in the wet, and use dry spells for longer outings. The sea averages 15.1°C, so it is cold rather than comfortably swimmable. Even a pleasant afternoon on land does not change that. For most travellers, time beside the water is a more realistic plan than time in it; a trip centred on regular sea swimming would be better left for warmer conditions.
A little perspective
Kefalonia through the year
March is highlighted. See how it compares with the rest of the year.
| Month | Day | Night | Sea | Sun/day | Rain mm | Rainy days | Days 25°C+ |
|---|---|---|---|---|---|---|---|
| January | 13.5°C | 10.8°C | 16.0°C | 4.6 | 117 | 12 | 0% |
| February | 13.4°C | 10.6°C | 15.2°C | 5.3 | 101 | 11 | 0% |
| MarchSelected | 14.9°C | 11.8°C | 15.1°C | 6.4 | 78 | 10 | 0% |
| April | 17.2°C | 13.9°C | 16.0°C | 7.8 | 41 | 7 | 1% |
| May | 20.9°C | 17.4°C | 18.9°C | 9.4 | 19 | 4 | 3% |
| Junebest | 24.8°C | 21.2°C | 22.5°C | 12.1 | 11 | 2 | 45% |
| Julybest | 27.1°C | 23.6°C | 24.6°C | 13.6 | 5 | 1 | 91% |
| Augustbest | 28.0°C | 24.5°C | 26.0°C | 12.4 | 7 | 1 | 99% |
| September | 25.2°C | 22.2°C | 25.0°C | 8.9 | 63 | 6 | 56% |
| October | 22.0°C | 19.1°C | 22.8°C | 6.5 | 104 | 9 | 5% |
| November | 18.4°C | 15.7°C | 20.3°C | 4.8 | 154 | 12 | 0% |
| December | 14.9°C | 12.3°C | 17.7°C | 4.3 | 156 | 13 | 0% |
Day = average daytime high, night = average night-time low, 1991-2020.Sun is hours per day; rainy days count 1 mm or more.
Day, night and sea
Monthly average temperatures, 1991-2020
- Day
- Night
- Sea
Best months here
On warmth, low rainfall and sunshine, start with these.
Keep exploring
Similar in March
Closest matches on daytime temperature, sea temperature and sunshine, in other countries.
A little more detail
Kefalonia in March FAQs
Plain answers, grounded in the averages.
Is Kefalonia hot in March?
Kefalonia is cool in March: the average daytime high is 14.9°C and nights average 11.8°C. Days over 25°C are rare in March.
Can you swim in the sea in Kefalonia in March?
The sea around Kefalonia averages 15.1°C in March, which is cold for swimming without a wetsuit. Between 1991 and 2020 it ranged from 14°C to 16°C depending on the year.
How much does it rain in Kefalonia in March?
Kefalonia sees about 10 rainy days (1 mm or more) and 78 mm of rain in a typical March. The wettest March between 1991 and 2020 was 2014 (169 mm) and the driest was 1994 (12 mm).
How sunny is Kefalonia in March?
Kefalonia gets around 6.4 hours of sunshine a day in March out of 11.7 hours of daylight (estimated from average cloud cover).
How does Kefalonia compare with the UK in March?
Kefalonia is on average 4.4°C warmer than London by day in March (14.9°C against 10.5°C).
What is the hottest March on record in Kefalonia?
Between 1991 and 2020 the hottest March day in Kefalonia reached 21.5°C on 2001-03-27, and the coldest night dropped to 4.8°C on 2020-03-17.
Is Kefalonia warmer than London in March?
Yes, but the difference is modest rather than a leap into summer. Kefalonia's average daytime high is 14.9°C, compared with London's 10.5°C, a difference of 4.4°C. Expect milder afternoons, while still packing layers and waterproofs.
How much sunshine can I expect?
March averages about 6.4 hours of sunshine within 11.7 hours of daylight. That leaves scope for time outdoors, but not reliably clear skies all day. Keep your plans flexible rather than depending on uninterrupted sunshine.
Is March the best month for a warm-weather trip?
No. March is cool and wet, so it suits travellers who do not need beach heat and can adapt their plans to the weather. July, August and June are the strongest months overall if warmer holiday conditions are your priority.
About these averages
ERA5-Land climate reanalysis via Open-Meteo (11 km grid) and NOAA Coral Reef Watch 5 km sea temperatures, 1991-2020
Averages computed from daily values at Argostólion (Argostoli). Sea temperature from the nearest 5 km sea cell, 1.4 km from that point. Sunshine hours are estimated from average cloud cover.Records are the highest and lowest daily values in that 30-year period, not all-time records. These are climate averages, not a forecast for your trip. How we measure holiday weather
- Hot · 25°C+
- Warm · 20°C to below 25°C
- Mild · 15°C to below 20°C
- Cool · below 15°C