Guaymas weather by month & the best time to visit
Mexico · beach resort · hot desert climate
The best time to visit Guaymas is April — its sunniest month (Sunshine Score 100/100), with March and December close behind. Guaymas averages about 3,717 hours of sunshine a year. Daytime highs around 31°C / 88°F and roughly 2 mm of rain in April.
When is the best time to visit Guaymas?
For sunshine, the best time to visit Guaymas is April, then March and December. The dullest month is June (39/100, 11 mm of rain). The full month-by-month picture is in the table below.
How sunny is Guaymas?
Guaymas is one of the sunniest places on Earth: about 3,717 hours of sunshine a year. 61 Sunshine Score points separate April (100) from June (39), so the month you pick matters. It ranks #9 of 62 destinations in Mexico for annual sunshine, above the national median of 3,138 hours. Rain is strongly seasonal here: roughly 75% of the year's 342 mm falls in the three months around August.
Sunshine Score by month
| Month | Score | Day high | Night low | Rain | UV | Sea |
|---|---|---|---|---|---|---|
| January | 98 | 24° / 75°F | 11° / 52°F | 12 mm | 5 | 19° / 66°F |
| February | 98 | 26° / 79°F | 12° / 54°F | 11 mm | 7 | 19° / 66°F |
| March | 99 | 28° / 82°F | 14° / 57°F | 7 mm | 9 | 19° / 66°F |
| April | 100 | 31° / 88°F | 16° / 61°F | 2 mm | 10 | 20° / 68°F |
| May | 80 | 34° / 93°F | 20° / 68°F | 1 mm | 11 | 24° / 75°F |
| June | 39 | 38° / 100°F | 25° / 77°F | 11 mm | 12 | 29° / 84°F |
| July | 51 | 36° / 97°F | 27° / 81°F | 84 mm | 11 | 31° / 88°F |
| August | 51 | 36° / 97°F | 27° / 81°F | 84 mm | 11 | 32° / 90°F |
| September | 50 | 36° / 97°F | 25° / 77°F | 89 mm | 10 | 32° / 90°F |
| October | 86 | 33° / 91°F | 20° / 68°F | 22 mm | 8 | 30° / 86°F |
| November | 98 | 29° / 84°F | 16° / 61°F | 11 mm | 6 | 22° / 72°F |
| December | 99 | 24° / 75°F | 11° / 52°F | 8 mm | 4 | 18° / 64°F |
Sea temperature in Guaymas by month
The sea off Guaymas is warmest in August at around 32°C / 90°F, and coolest in December at 18°C / 64°F. The water sits at a comfortable 21°C or warmer roughly 7 months a year. Month-by-month sea-surface temperatures are in the Sea column of the table above.
Nearest destinations
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Guaymas: questions and answers
What kind of destination is Guaymas?
Guaymas is a beach resort in Mexico with a hot desert climate — the sea reaches 32°C at its warmest and is swimmable (21°C+) about 7 months a year.
How many hours of sunshine does Guaymas get a year?
Guaymas gets about 3,717 hours of sunshine a year, at its best around April.
When is the best time to visit Guaymas?
The sunniest time to visit Guaymas is April, when the Sunshine Score peaks at 100/100 (with March and December close behind). Expect daytime highs around 31°C / 88°F.
What is the least sunny month in Guaymas?
June is the least sunny month in Guaymas, scoring 39/100 with about 11 mm of rain.
What is the sea temperature in Guaymas?
The sea in Guaymas ranges from about 18°C (December) to 32°C (August). Month-by-month sea temperatures are on this page.
How strong is the sun in Guaymas?
The typical midday UV index in Guaymas peaks around 12 (extreme) in June, easing to about 4 (moderate) in December. Month-by-month midday UV values are in the UV column of the table on this page.
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