Kefallinia weather by month & the best time to visit
🇬🇷 Greece · beach resort · Mediterranean climate
The best time to visit Kefallinia is July — its sunniest month (Sunshine Score 94/100), with June and August close behind. Kefallinia averages about 2,846 hours of sunshine a year. Daytime highs around 28°C / 82°F and roughly 11 mm of rain in July.
Jump to: month-by-month table · sea temperature · nearby alternatives · embed this data
- Sun hours / year
- 2,846
- Sunniest month
- July
- Peak score
- 94/100
- Rain / year
- 822 mm
- Midday UV at peak
- 9 (very high)
- Sea at warmest
- 27°C / 81°F
- Population
- 47k
- Elevation
- 15 m

When is the best time to visit Kefallinia?
For sunshine, the best time to visit Kefallinia is July, then June and August. The dullest month is January (37/100, 116 mm of rain). The full month-by-month picture is in the table below.
How sunny is Kefallinia?
Kefallinia gets a lot of sun: around 2,846 hours a year. 57 Sunshine Score points separate July (94) from January (37), so the month you pick matters. It ranks #25 of 40 destinations in Greece for annual sunshine, below the national median of 2,896 hours. Rain has a clear season: the wettest stretch, around December, carries about 47% of the annual 822 mm.
Sunshine Score by month
| Month | Score | Day high | Night low | Rain | UV | Sea |
|---|---|---|---|---|---|---|
| January | 37 | 14° / 57°F | 12° / 54°F | 116 mm | 1 | 17° / 63°F |
| February | 40 | 14° / 57°F | 11° / 52°F | 88 mm | 2 | 16° / 61°F |
| March | 48 | 15° / 59°F | 13° / 55°F | 70 mm | 4 | 17° / 63°F |
| April | 74 | 18° / 64°F | 15° / 59°F | 40 mm | 6 | 17° / 63°F |
| May | 91 | 21° / 70°F | 18° / 64°F | 24 mm | 7 | 19° / 66°F |
| June | 93 | 26° / 79°F | 22° / 72°F | 17 mm | 9 | 24° / 75°F |
| July | 94 | 28° / 82°F | 25° / 77°F | 11 mm | 9 | 26° / 79°F |
| August | 93 | 29° / 84°F | 25° / 77°F | 15 mm | 8 | 27° / 81°F |
| September | 83 | 26° / 79°F | 23° / 73°F | 71 mm | 6 | 26° / 79°F |
| October | 77 | 23° / 73°F | 20° / 68°F | 100 mm | 4 | 24° / 75°F |
| November | 67 | 19° / 66°F | 17° / 63°F | 125 mm | 2 | 22° / 72°F |
| December | 46 | 16° / 61°F | 13° / 55°F | 145 mm | 1 | 18° / 64°F |
Sea temperature in Kefallinia by month
The sea off Kefallinia is warmest in August at around 27°C / 81°F, and coolest in February at 16°C / 61°F. The water sits at a comfortable 21°C or warmer roughly 6 months a year. Month-by-month sea-surface temperatures are in the Sea column of the table above.
See Kefallinia on the interactive sunshine globe →
Nearby places for sunshine
- Zakynthos Greece · 53 km · best in Jul · 2,970 h sun/yr
- Patras Greece · 81 km · best in Jul · 2,829 h sun/yr
- Preveza Greece · 92 km · best in Jul · 2,849 h sun/yr
- Corfu Greece · 172 km · best in Jul · 2,819 h sun/yr
- Kalamata Greece · 178 km · best in May · 2,737 h sun/yr
- Skiathos Greece · 286 km · best in Aug · 2,524 h sun/yr
Nearest destinations
- Ioannina Greece · 177 km · 2,741 h sun/yr · best in Jul
Head-to-head
How Kefallinia compares month by month: Kefallinia vs Patras · Kefallinia vs Corfu · Kefallinia vs Kalamata · Kefallinia vs Preveza · all comparisons
Put the Kefallinia sunshine badge on your site
A compact badge showing Kefallinia's sunshine at a glance — free to embed under CC BY 4.0. Paste this wherever you'd like it to appear:
Live preview — this is exactly what your readers see: