San Diego vs Mexicali: which is sunnier?
🇺🇸 United States vs 🇲🇽 Mexico · 183 km apart · long-term climate normals (NASA POWER, 2001–2020)
Mexicali is the sunnier overall: about 3,841 hours of sunshine a year to San Diego's 2,854. Month by month it's balanced: each has the higher Sunshine Score in 6 months.
Scores are the 0–100 Sunshine Score — sunshine, daytime warmth and dryness in one number, per month.
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At a glance
| San Diego | Mexicali | |
|---|---|---|
| Sunshine hours / year | 2,854 | 3,841 |
| Sunniest month | July (95/100) | March (99/100) |
| Nov–Feb average score | 68/100 | 96/100 |
| Jun–Aug average score | 89/100 | 3/100 |
| Rain / year | 269 mm | 84 mm |
| Peak midday UV | 9 (very high) | 11 (extreme) |
San Diego vs Mexicali month by month
| Month | Sunshine Score | Day high °C | Rain mm | |||
|---|---|---|---|---|---|---|
| San Diego | Mexicali | San Diego | Mexicali | San Diego | Mexicali | |
| January | 66 | 98 | 17° | 20° | 42 | 11 |
| February | 58 | 98 | 16° | 23° | 52 | 11 |
| March | 60 | 99 | 16° | 27° | 29 | 8 |
| April | 70 | 99 | 17° | 31° | 17 | 3 |
| May | 71 | 60 | 17° | 36° | 7 | 2 |
| June | 76 | 10 | 18° | 41° | 26 | 0 |
| July | 95 | 0 | 20° | 43° | 4 | 7 |
| August | 95 | 0 | 21° | 43° | 2 | 8 |
| September | 95 | 20 | 22° | 40° | 5 | 11 |
| October | 93 | 89 | 21° | 33° | 14 | 5 |
| November | 84 | 99 | 19° | 26° | 23 | 8 |
| December | 65 | 90 | 17° | 19° | 48 | 10 |
The sunnier month by month: Jan Mexicali · Feb Mexicali · Mar Mexicali · Apr Mexicali · May San Diego · Jun San Diego · Jul San Diego · Aug San Diego · Sep San Diego · Oct San Diego · Nov Mexicali · Dec Mexicali.
When to pick which
- November–February: Mexicali (average score 96/100 vs 68). Mexicali is the warmer, around 22°C daytime highs vs 17°C. See the winter sun ranking.
- March–May: Mexicali (average score 86/100 vs 67). Mexicali is the warmer, around 31°C daytime highs vs 17°C.
- June–August: San Diego (average score 89/100 vs 3). Mexicali is the warmer, around 42°C daytime highs vs 20°C.
- September–October: San Diego (average score 94/100 vs 55). Mexicali is the warmer, around 37°C daytime highs vs 22°C.
Full month-by-month guides: San Diego weather by month · Mexicali weather by month · Best time to visit United States · Best time to visit Mexico.
More comparisons: San Diego vs Los Angeles · San Diego vs Tijuana · San Diego vs Ontario · Mexicali vs Tijuana · Mexicali vs Palm Springs · all head-to-heads