Is Ljubljana sunnier than Trieste?

Trieste is the sunnier: about 2,292 hours of sunshine a year versus 1,951 — a difference of 341 hours.

Which is warmer, Ljubljana or Trieste?

Trieste is warmer across the year: average daytime highs of 18°C (64°F) versus 16°C.

Which is better in winter (November–February), Ljubljana or Trieste?

Trieste scores better across November–February: 7/100 average versus 3, with daytime highs around 9°C.

Ljubljana vs Trieste: which is sunnier?

🇸🇮 Slovenia vs 🇮🇹 Italy · 88 km apart · long-term climate normals (NASA POWER, 2001–2020)

Trieste is the sunnier overall: about 2,292 hours of sunshine a year to Ljubljana's 1,951. Trieste has the higher Sunshine Score in 6 of 12 months; the other 6 are within 2 points.

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

At a glance

	Ljubljana	Trieste
Sunshine hours / year	1,951	2,292
Sunniest month	July (75/100)	July (77/100)
Nov–Feb average score	3/100	7/100
Jun–Aug average score	74/100	76/100
Rain / year	1,054 mm	1,094 mm
Peak midday UV	6 (high)	7 (high)

Ljubljana vs Trieste month by month

Month	Sunshine Score		Day high °C		Rain mm
Month	Ljubljana	Trieste	Ljubljana	Trieste	Ljubljana	Trieste
January	0	0	4°	6°	60	65
February	0	0	5°	8°	73	76
March	13	33	10°	13°	71	77
April	51	65	16°	18°	73	75
May	72	75	20°	22°	96	95
June	74	76	25°	27°	88	86
July	75	77	27°	30°	83	81
August	73	75	27°	30°	94	95
September	68	71	21°	24°	118	116
October	47	60	16°	18°	104	111
November	12	29	10°	13°	109	121
December	0	0	5°	8°	85	96

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

When to pick which

November–February: Trieste (average score 7/100 vs 3). Trieste is the warmer, around 9°C daytime highs vs 6°C. See the winter sun ranking.
March–May: Trieste (average score 58/100 vs 45). Trieste is the warmer, around 18°C daytime highs vs 15°C.
June–August: too close to call — Ljubljana averages 74/100, Trieste 76/100. Trieste is the warmer, around 29°C daytime highs vs 26°C.
September–October: Trieste (average score 66/100 vs 58). Trieste is the warmer, around 21°C daytime highs vs 19°C.

Full month-by-month guides: Ljubljana weather by month · Trieste weather by month · Best time to visit Italy.

More comparisons: Ljubljana vs Zagreb · Ljubljana vs Graz · Ljubljana vs Rijeka(Omišalj) · Trieste vs Venice · Trieste vs Rijeka(Omišalj) · Trieste vs Pula · all head-to-heads