Mazatlàn weather by month & the best time to visit
Mexico · beach resort · tropical — wet & dry seasons climate

The best time to visit Mazatlàn is March — its sunniest month (Sunshine Score 99/100), with April and May close behind. Mazatlàn averages about 3,372 hours of sunshine a year. Daytime highs around 27°C / 81°F and roughly 3 mm of rain in March.
When is the best time to visit Mazatlàn?
For sunshine, the best time to visit Mazatlàn is March, then April and May. The dullest month is July (72/100, 173 mm of rain). The full month-by-month picture is in the table below.
How sunny is Mazatlàn?
Mazatlàn is one of the sunniest places on Earth: about 3,372 hours of sunshine a year. March (99/100) is noticeably better than July (72). It ranks #21 of 62 destinations in Mexico for annual sunshine, above the national median of 3,138 hours. Rain is strongly seasonal here: roughly 77% of the year's 865 mm falls in the three months around August.
Sunshine Score by month
| Month | Score | Day high | Night low | Rain | UV | Sea |
|---|---|---|---|---|---|---|
| January | 98 | 26° / 79°F | 20° / 68°F | 9 mm | 6 | 25° / 77°F |
| February | 96 | 26° / 79°F | 20° / 68°F | 17 mm | 8 | 24° / 75°F |
| March | 99 | 27° / 81°F | 20° / 68°F | 3 mm | 10 | 23° / 73°F |
| April | 99 | 28° / 82°F | 22° / 72°F | 0 mm | 11 | 22° / 72°F |
| May | 99 | 30° / 86°F | 24° / 75°F | 1 mm | 11 | 27° / 81°F |
| June | 90 | 31° / 88°F | 26° / 79°F | 51 mm | 10 | 29° / 84°F |
| July | 72 | 31° / 88°F | 27° / 81°F | 173 mm | 10 | 31° / 88°F |
| August | 72 | 30° / 86°F | 28° / 82°F | 260 mm | 10 | 31° / 88°F |
| September | 72 | 30° / 86°F | 27° / 81°F | 236 mm | 9 | 31° / 88°F |
| October | 85 | 30° / 86°F | 26° / 79°F | 80 mm | 8 | 31° / 88°F |
| November | 95 | 28° / 82°F | 24° / 75°F | 25 mm | 6 | 27° / 81°F |
| December | 97 | 26° / 79°F | 21° / 70°F | 10 mm | 5 | 24° / 75°F |
Sea temperature in Mazatlàn by month
The sea off Mazatlàn is warmest in July at around 31°C / 88°F, and coolest in April at 22°C / 72°F. The water sits at a comfortable 21°C or warmer roughly all year round. Month-by-month sea-surface temperatures are in the Sea column of the table above.
Nearest destinations
Head-to-head
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Mazatlàn: questions and answers
What kind of destination is Mazatlàn?
Mazatlàn is a beach resort in Mexico with a tropical — wet & dry seasons climate — the sea reaches 31°C at its warmest and is swimmable (21°C+) year-round.
How many hours of sunshine does Mazatlàn get a year?
Mazatlàn gets about 3,372 hours of sunshine a year, at its best around March.
When is the best time to visit Mazatlàn?
The sunniest time to visit Mazatlàn is March, when the Sunshine Score peaks at 99/100 (with April and May close behind). Expect daytime highs around 27°C / 81°F.
What is the least sunny month in Mazatlàn?
July is the least sunny month in Mazatlàn, scoring 72/100 with about 173 mm of rain.
What is the sea temperature in Mazatlàn?
The sea in Mazatlàn ranges from about 22°C (April) to 31°C (July). Month-by-month sea temperatures are on this page.
How strong is the sun in Mazatlàn?
The typical midday UV index in Mazatlàn peaks around 11 (extreme) in April, easing to about 5 (moderate) in December. Month-by-month midday UV values are in the UV column of the table on this page.
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