Tucson vs Hermosillo: which is sunnier?
🇺🇸 United States vs 🇲🇽 Mexico · 336 km apart · long-term climate normals (NASA POWER, 2001–2020)
Hermosillo is the sunnier overall: about 3,844 hours of sunshine a year to Tucson's 3,726. Tucson has the higher Sunshine Score in 5 of 12 months, Hermosillo 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
| Tucson | Hermosillo | |
|---|---|---|
| Sunshine hours / year | 3,726 | 3,844 |
| Sunniest month | April (99/100) | April (100/100) |
| Nov–Feb average score | 86/100 | 98/100 |
| Jun–Aug average score | 42/100 | 36/100 |
| Rain / year | 322 mm | 383 mm |
| Peak midday UV | 11 (extreme) | 11 (extreme) |
Tucson vs Hermosillo month by month
| Month | Sunshine Score | Day high °C | Rain mm | |||
|---|---|---|---|---|---|---|
| Tucson | Hermosillo | Tucson | Hermosillo | Tucson | Hermosillo | |
| January | 80 | 97 | 18° | 23° | 24 | 16 |
| February | 88 | 98 | 19° | 25° | 21 | 13 |
| March | 97 | 98 | 24° | 29° | 14 | 9 |
| April | 99 | 100 | 28° | 32° | 8 | 2 |
| May | 89 | 70 | 33° | 35° | 4 | 1 |
| June | 30 | 20 | 39° | 40° | 8 | 12 |
| July | 42 | 40 | 37° | 37° | 83 | 110 |
| August | 53 | 49 | 36° | 36° | 64 | 99 |
| September | 74 | 51 | 34° | 36° | 40 | 80 |
| October | 97 | 88 | 29° | 33° | 15 | 14 |
| November | 97 | 97 | 23° | 28° | 14 | 15 |
| December | 79 | 98 | 18° | 23° | 27 | 12 |
The sunnier month by month: Jan Hermosillo · Feb Hermosillo · Mar even · Apr even · May Tucson · Jun Tucson · Jul even · Aug Tucson · Sep Tucson · Oct Tucson · Nov even · Dec Hermosillo.
When to pick which
- November–February: Hermosillo (average score 98/100 vs 86). Hermosillo is the warmer, around 25°C daytime highs vs 20°C. See the winter sun ranking.
- March–May: Tucson (average score 95/100 vs 89). Hermosillo is the warmer, around 32°C daytime highs vs 28°C.
- June–August: Tucson (average score 42/100 vs 36). Daytime highs are similar (37°C vs 38°C).
- September–October: Tucson (average score 86/100 vs 70). Hermosillo is the warmer, around 35°C daytime highs vs 32°C.
Full month-by-month guides: Tucson weather by month · Hermosillo weather by month · Best time to visit United States · Best time to visit Mexico.
More comparisons: Tucson vs Phoenix · Tucson vs Mesa · Hermosillo vs Ciudad Obregón · Hermosillo vs Los Mochis · all head-to-heads