Ilhéus in September
In September, Ilhéus averages 26°C (79°F) during the day and 21°C (70°F) at night, with frequent rain — about 27 days of the month see precipitation (81 mm total).
ShoulderConditions are warm and beach-friendly. Expect daily rain or showers, often in heavy bursts.
September offers comfortable temperatures in Ilhéus, with some rain to plan around.
How September compares to the rest of the year in Ilhéus
September is in the middle of the year for warmth in Ilhéus (9th of 12) and one of the driest months (10th of 12). Daytime temperature runs 1°C below the annual average (27°C). September runs 1°C warmer than August (25°C) and warms a further 1°C into October (27°C).
September sunrise & sunset in Ilhéus
Times shown for Ilhéus local time (America/Bahia), calculated for the 15th of September. They shift by a few minutes day to day across the month.
Photography light in Ilhéus — September
Golden-hour and blue-hour windows for the 15th of September, in Ilhéus's local time. Use these for soft warm light (golden) or cool architectural twilight (blue).
📅 When to book — Ilhéus 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 (Shoulder) and Ilhéus's popularity.
Crowds & pricing — September in Ilhéus
Ilhéus is in a shoulder season month — fewer crowds, slightly lower prices, and a calmer atmosphere than peak weeks. Most major sights stay open with normal hours, though a handful of seasonal restaurants or boat trips may run reduced schedules. Many regulars consider these months the best time to visit because you trade a small amount of weather reliability for a much more pleasant on-the-ground experience.
Sun & mosquito risk — September in Ilhéus
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.
Ilhéus in other months
| Month | Avg high | Avg low | Rainfall | Rain days | Snow days |
|---|---|---|---|---|---|
| January | 29°C / 83°F | 23°C / 74°F | 90 mm | 30 | — |
| February | 29°C / 84°F | 24°C / 75°F | 85 mm | 27 | — |
| March | 29°C / 84°F | 23°C / 74°F | 113 mm | 29 | — |
| April | 28°C / 83°F | 23°C / 73°F | 136 mm | 28 | — |
| May | 27°C / 81°F | 22°C / 71°F | 125 mm | 27 | — |
| June | 26°C / 79°F | 21°C / 69°F | 115 mm | 27 | — |
| July | 25°C / 77°F | 20°C / 68°F | 108 mm | 28 | — |
| August | 25°C / 78°F | 20°C / 68°F | 91 mm | 27 | — |
| September | 26°C / 79°F | 21°C / 70°F | 81 mm | 27 | — |
| October | 27°C / 81°F | 23°C / 73°F | 110 mm | 28 | — |
| November | 28°C / 82°F | 23°C / 73°F | 184 mm | 27 | — |
| December | 28°C / 83°F | 23°C / 74°F | 154 mm | 26 | — |
Other cities with similar September weather
🌍 See the full ranked list of climate twins for Ilhéus in September →
Frequently asked questions
How hot is Ilhéus in September?
In September, Ilhéus averages a high of 26°C (79°F) and a low of 21°C (70°F) — generally warm.
Does it rain a lot in Ilhéus in September?
September is quite rainy in Ilhéus, with about 27 rainy days on average.
Is September a good time to visit Ilhéus?
September is warm but on the rainy side. It suits travelers who are comfortable with warm weather; check the month-by-month ranking to compare it against the rest of the year.
What should I pack for Ilhéus in September?
Pack light layers for warm days and cooler evenings, plus a compact umbrella or rain jacket. See the full September packing list for Ilhéus for a complete, climate-based checklist.
Check the live 10-day forecast and sunrise/sunset.