Is Kalamata sunnier than Zakynthos?

Zakynthos is the sunnier: about 2,970 hours of sunshine a year versus 2,737 — a difference of 233 hours.

Which is warmer, Kalamata or Zakynthos?

Kalamata is warmer across the year: average daytime highs of 23°C (73°F) versus 21°C.

Which is better in winter (November–February), Kalamata or Zakynthos?

Kalamata scores better across November–February: 53/100 average versus 48, with daytime highs around 16°C.

Which has the warmer sea, Kalamata or Zakynthos?

Both peak at about 28°C (82°F); month-by-month sea temperatures for both are on this page.

Kalamata vs Zakynthos: which is sunnier?

🇬🇷 Greece vs 🇬🇷 Greece · 126 km apart · long-term climate normals (NASA POWER, 2001–2020)

Zakynthos is the sunnier overall: about 2,970 hours of sunshine a year to Kalamata's 2,737. Kalamata has the higher Sunshine Score in 6 of 12 months, Zakynthos in 3 (3 within 2 points).

Scores are the 0–100 Sunshine Score — sunshine, daytime warmth and dryness in one number, per month.

At a glance

	Kalamata	Zakynthos
Sunshine hours / year	2,737	2,970
Sunniest month	May (91/100)	July (95/100)
Nov–Feb average score	53/100	48/100
Jun–Aug average score	86/100	94/100
Rain / year	688 mm	822 mm
Warmest sea	28°C / 82°F	28°C / 82°F
Peak midday UV	9 (very high)	10 (very high)

Kalamata vs Zakynthos month by month

Month	Sunshine Score		Day high °C		Rain mm		Sea °C
Month	Kalamata	Zakynthos	Kalamata	Zakynthos	Kalamata	Zakynthos	Kalamata	Zakynthos
January	37	38	14°	14°	111	116	18°	18°
February	47	40	15°	14°	81	88	17°	17°
March	63	49	17°	15°	59	70	17°	17°
April	90	74	20°	18°	30	40	18°	17°
May	91	92	25°	21°	21	24	20°	19°
June	90	93	29°	26°	26	17	24°	24°
July	83	95	33°	29°	13	11	27°	27°
August	84	94	33°	29°	9	15	28°	28°
September	85	84	29°	26°	55	71	27°	26°
October	83	78	25°	23°	68	100	24°	24°
November	76	68	20°	19°	102	125	22°	22°
December	50	47	16°	16°	113	145	19°	18°

The sunnier month by month: Jan even · Feb Kalamata · Mar Kalamata · Apr Kalamata · May even · Jun Zakynthos · Jul Zakynthos · Aug Zakynthos · Sep even · Oct Kalamata · Nov Kalamata · Dec Kalamata.

When to pick which

November–February: Kalamata (average score 53/100 vs 48). Daytime highs are similar (16°C vs 16°C). See the winter sun ranking.
March–May: Kalamata (average score 81/100 vs 72). Kalamata is the warmer, around 21°C daytime highs vs 18°C.
June–August: Zakynthos (average score 94/100 vs 86). Kalamata is the warmer, around 32°C daytime highs vs 28°C.
September–October: Kalamata (average score 84/100 vs 81). Kalamata is the warmer, around 27°C daytime highs vs 25°C.

Sea temperature

Both seas peak at 28°C / 82°F. Swimmable water (21°C+): Kalamata about 6 months a year, Zakynthos about 6 months a year. Month-by-month sea temperatures are in the table above.

Full month-by-month guides: Kalamata weather by month · Zakynthos weather by month · Best time to visit Greece.

More comparisons: Kalamata vs Athens · Kalamata vs Patras · Kalamata vs Kefallinia · Zakynthos vs Patras · Zakynthos vs Kefallinia · all head-to-heads