Is Montevideo sunnier than Rosario?

They are nearly tied: Montevideo gets about 2,791 hours of sunshine a year and Rosario about 2,737.

Which is warmer, Montevideo or Rosario?

Rosario is warmer across the year: average daytime highs of 24°C (75°F) versus 19°C.

Which is better in winter (November–February), Montevideo or Rosario?

Montevideo scores better across November–February: 78/100 average versus 70, with daytime highs around 25°C.

Montevideo vs Rosario: which is sunnier?

🇺🇾 Uruguay vs 🇦🇷 Argentina · 489 km apart · long-term climate normals (NASA POWER, 2001–2020)

Montevideo and Rosario are virtually tied for annual sunshine — about 2,791 vs 2,737 hours a year. Rosario has the higher Sunshine Score in 6 of 12 months, Montevideo in 5 (1 within 2 points).

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

At a glance

	Montevideo	Rosario
Sunshine hours / year	2,791	2,737
Sunniest month	December (80/100)	September (84/100)
Nov–Feb average score	78/100	70/100
Jun–Aug average score	35/100	65/100
Rain / year	1,184 mm	1,090 mm
Peak midday UV	12 (extreme)	11 (extreme)

Montevideo vs Rosario month by month

Month	Sunshine Score		Day high °C		Rain mm
Month	Montevideo	Rosario	Montevideo	Rosario	Montevideo	Rosario
January	77	65	26°	33°	102	123
February	76	70	25°	31°	106	139
March	74	68	24°	28°	118	148
April	75	75	20°	24°	114	111
May	60	78	17°	19°	84	52
June	39	61	14°	16°	98	22
July	26	60	12°	16°	92	26
August	40	73	14°	18°	89	38
September	45	84	15°	22°	96	58
October	64	73	18°	25°	103	122
November	78	75	22°	29°	96	109
December	80	69	25°	32°	86	142

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

When to pick which

November–February: Montevideo (average score 78/100 vs 70). Rosario is the warmer, around 31°C daytime highs vs 25°C.
March–May: Rosario (average score 74/100 vs 70). Rosario is the warmer, around 24°C daytime highs vs 20°C.
June–August: Rosario (average score 65/100 vs 35). Rosario is the warmer, around 17°C daytime highs vs 13°C.
September–October: Rosario (average score 79/100 vs 55). Rosario is the warmer, around 24°C daytime highs vs 17°C.

Full month-by-month guides: Montevideo weather by month · Rosario weather by month · Best time to visit Argentina.

More comparisons: Montevideo vs Buenos Aires (Ezeiza) · Montevideo vs Porto Alegre · Rosario vs Buenos Aires (Ezeiza) · Rosario vs Cordoba · all head-to-heads