Mendoza vs La Serena-Coquimbo: which is sunnier?
🇦🇷 Argentina vs 🇨🇱 Chile · 397 km apart · long-term climate normals (NASA POWER, 2001–2020)
Mendoza is the sunnier overall: about 3,504 hours of sunshine a year to La Serena-Coquimbo's 2,601. La Serena-Coquimbo has the higher Sunshine Score in 5 of 12 months, Mendoza in 3 (4 within 2 points).
Scores are the 0–100 Sunshine Score — sunshine, daytime warmth and dryness in one number, per month.


At a glance
| Mendoza | La Serena-Coquimbo | |
|---|---|---|
| Sunshine hours / year | 3,504 | 2,601 |
| Sunniest month | September (99/100) | January (94/100) |
| Nov–Feb average score | 84/100 | 94/100 |
| Jun–Aug average score | 76/100 | 91/100 |
| Rain / year | 292 mm | 91 mm |
| Peak midday UV | 12 (extreme) | 11 (extreme) |
Mendoza vs La Serena-Coquimbo month by month
| Month | Sunshine Score | Day high °C | Rain mm | |||
|---|---|---|---|---|---|---|
| Mendoza | La Serena-Coquimbo | Mendoza | La Serena-Coquimbo | Mendoza | La Serena-Coquimbo | |
| January | 73 | 94 | 34° | 27° | 47 | 1 |
| February | 82 | 94 | 33° | 27° | 49 | 1 |
| March | 93 | 94 | 30° | 26° | 37 | 1 |
| April | 95 | 94 | 25° | 24° | 28 | 2 |
| May | 97 | 91 | 20° | 22° | 19 | 19 |
| June | 74 | 90 | 17° | 20° | 8 | 25 |
| July | 65 | 90 | 16° | 20° | 10 | 21 |
| August | 90 | 92 | 19° | 21° | 9 | 13 |
| September | 99 | 94 | 23° | 22° | 8 | 3 |
| October | 97 | 94 | 27° | 23° | 15 | 3 |
| November | 94 | 94 | 31° | 25° | 32 | 1 |
| December | 85 | 94 | 33° | 26° | 30 | 1 |
The sunnier month by month: Jan La Serena-Coquimbo · Feb La Serena-Coquimbo · Mar even · Apr even · May Mendoza · Jun La Serena-Coquimbo · Jul La Serena-Coquimbo · Aug even · Sep Mendoza · Oct Mendoza · Nov even · Dec La Serena-Coquimbo.
When to pick which
- November–February: La Serena-Coquimbo (average score 94/100 vs 84). Mendoza is the warmer, around 33°C daytime highs vs 26°C.
- March–May: too close to call — Mendoza averages 95/100, La Serena-Coquimbo 93/100. Daytime highs are similar (25°C vs 24°C).
- June–August: La Serena-Coquimbo (average score 91/100 vs 76). La Serena-Coquimbo is the warmer, around 20°C daytime highs vs 17°C.
- September–October: Mendoza (average score 98/100 vs 94). Mendoza is the warmer, around 25°C daytime highs vs 23°C.
Full month-by-month guides: Mendoza weather by month · La Serena-Coquimbo weather by month · Best time to visit Argentina · Best time to visit Chile.
More comparisons: Mendoza vs Santiago · Mendoza vs Cordoba · La Serena-Coquimbo vs Santiago · La Serena-Coquimbo vs Copiapo · all head-to-heads