Chetumal vs Tulum: which is sunnier?
🇲🇽 Mexico vs 🇲🇽 Mexico · 198 km apart · long-term climate normals (NASA POWER, 2001–2020)
Tulum is the sunnier overall: about 2,695 hours of sunshine a year to Chetumal's 2,483. Tulum has the higher Sunshine Score in 5 of 12 months; the other 7 are within 2 points.
Scores are the 0–100 Sunshine Score — sunshine, daytime warmth and dryness in one number, per month.


At a glance
| Chetumal | Tulum | |
|---|---|---|
| Sunshine hours / year | 2,483 | 2,695 |
| Sunniest month | February (86/100) | February (87/100) |
| Nov–Feb average score | 79/100 | 83/100 |
| Jun–Aug average score | 68/100 | 70/100 |
| Rain / year | 1,392 mm | 1,293 mm |
| Peak midday UV | 10 (very high) | 10 (very high) |
Chetumal vs Tulum month by month
| Month | Sunshine Score | Day high °C | Rain mm | |||
|---|---|---|---|---|---|---|
| Chetumal | Tulum | Chetumal | Tulum | Chetumal | Tulum | |
| January | 81 | 86 | 27° | 27° | 68 | 50 |
| February | 86 | 87 | 28° | 28° | 40 | 41 |
| March | 86 | 87 | 29° | 29° | 38 | 41 |
| April | 86 | 87 | 31° | 30° | 39 | 41 |
| May | 70 | 75 | 31° | 30° | 130 | 110 |
| June | 66 | 67 | 30° | 29° | 201 | 181 |
| July | 71 | 74 | 30° | 30° | 120 | 116 |
| August | 66 | 68 | 30° | 30° | 154 | 149 |
| September | 66 | 67 | 30° | 29° | 172 | 185 |
| October | 66 | 67 | 29° | 28° | 221 | 208 |
| November | 70 | 74 | 28° | 27° | 128 | 111 |
| December | 79 | 84 | 27° | 27° | 81 | 60 |
The sunnier month by month: Jan Tulum · Feb even · Mar even · Apr even · May Tulum · Jun even · Jul Tulum · Aug even · Sep even · Oct even · Nov Tulum · Dec Tulum.
When to pick which
- November–February: Tulum (average score 83/100 vs 79). Daytime highs are similar (28°C vs 27°C). See the winter sun ranking.
- March–May: too close to call — Chetumal averages 81/100, Tulum 83/100. Daytime highs are similar (30°C vs 30°C).
- June–August: too close to call — Chetumal averages 68/100, Tulum 70/100. Daytime highs are similar (30°C vs 30°C).
- September–October: too close to call — Chetumal averages 66/100, Tulum 67/100. Daytime highs are similar (30°C vs 29°C).
Full month-by-month guides: Chetumal weather by month · Tulum weather by month · Best time to visit Mexico.
More comparisons: Chetumal vs Cozumel · Chetumal vs Belize City · Tulum vs Mérida · Tulum vs Cancún · Tulum vs Cozumel · all head-to-heads