Loreto in September
In September, Loreto averages 33°C (91°F) during the day and 27°C (80°F) at night, with around 9 days of rain (78 mm total).
Off-peakConditions are very hot — early-morning and evening sightseeing recommended. Occasional showers are likely but won't dominate.
It's peak hurricane season in Loreto during September. Travel is possible but expect storm risk, possible flight disruption, and generally lower travel insurance coverage.
How September compares to the rest of the year in Loreto
September is in the middle of the year for warmth in Loreto (4th of 12) and one of the wettest months (2nd of 12). Daytime temperature runs 4°C above the annual average (29°C). September runs 1°C cooler than August (34°C) and cools 2°C in October (31°C).
September sunrise & sunset in Loreto
Times shown for Loreto local time (America/Mazatlan), calculated for the 15th of September. They shift by a few minutes day to day across the month.
Photography light in Loreto — September
Golden-hour and blue-hour windows for the 15th of September, in Loreto's local time. Use these for soft warm light (golden) or cool architectural twilight (blue).
📅 When to book — Loreto in September
Travel writers usually only tell you when to go. Here's when to book flights and lodging for the best mix of price and availability, based on September's tier (Off-peak) and Loreto's popularity.
Crowds & pricing — September in Loreto
This is off-peak for Loreto — the lowest prices of the year and the fewest crowds, but with real trade-offs: some restaurants, hotels, and beach businesses may close for the season; weather conditions can make outdoor activities unpredictable; and a handful of seasonal sights run reduced hours or close entirely. Great if you prefer a quiet local rhythm and don't mind the climate giving you reasons to choose indoor activities.
Why this tier: peak hazard season (1 active)
Sun & mosquito risk — September in Loreto
UV is a clear-sky sea-level estimate — clouds, altitude, and reflective surfaces (snow, water) shift it ±30%. Mosquito risk is climate-derived only; for current disease advisories (dengue, malaria, zika) check the CDC or WHO travel pages before your trip.
Sea temperature in Loreto — September
Across the year Loreto's sea swings from 19.1°C (February) to 31.1°C (September) — September sits at 31.1°C.
Loreto in other months
| Month | Avg high | Avg low | Rainfall | Rain days | Snow days |
|---|---|---|---|---|---|
| January | 23°C / 73°F | 16°C / 60°F | 7 mm | 2 | — |
| February | 24°C / 75°F | 16°C / 61°F | 5 mm | 2 | — |
| March | 25°C / 78°F | 17°C / 63°F | 6 mm | 2 | — |
| April | 28°C / 82°F | 19°C / 67°F | 1 mm | 1 | — |
| May | 29°C / 85°F | 21°C / 70°F | 1 mm | 1 | — |
| June | 33°C / 91°F | 26°C / 78°F | 10 mm | 1 | — |
| July | 34°C / 93°F | 28°C / 83°F | 8 mm | 4 | — |
| August | 34°C / 93°F | 28°C / 83°F | 39 mm | 10 | — |
| September | 33°C / 91°F | 27°C / 80°F | 78 mm | 9 | — |
| October | 31°C / 88°F | 24°C / 75°F | 18 mm | 3 | — |
| November | 27°C / 81°F | 20°C / 67°F | 14 mm | 2 | — |
| December | 24°C / 74°F | 16°C / 61°F | 6 mm | 3 | — |
Other cities with similar September weather
🌍 See the full ranked list of climate twins for Loreto in September →
Frequently asked questions
How hot is Loreto in September?
In September, Loreto averages a high of 33°C (91°F) and a low of 27°C (80°F) — generally hot.
Does it rain a lot in Loreto in September?
September sees occasional rain in Loreto, with about 9 rainy days on average.
Is September a good time to visit Loreto?
September is hot. It suits travelers who are comfortable with hot weather; check the month-by-month ranking to compare it against the rest of the year.
What should I pack for Loreto in September?
Pack lightweight, breathable clothing, sunglasses and sunscreen. See the full September packing list for Loreto for a complete, climate-based checklist.
Check the live 10-day forecast and sunrise/sunset.