Early in the month, sailboats lean into the wind off San Pedro while a crowd on the shore cheers the regatta, and flags in blue and red begin to appear on porches, school fences and bicycle handlebars. September is Belize’s own month, a stretch of national celebrations that runs from Saint George’s Caye Day to Independence Day. It is also deep in the rainy season, with a warm sea, green jungle and reef days between the showers, which makes it a month for travelers who want the country’s holidays and a lush landscape.
What is the weather like in Belize in September?
September in Belize City is hot with frequent rain, and the sea around San Pedro, Placencia and Corozal Town sits in the upper 80s. The comparison with August and October shows a month in the middle of the wet season, with the sea at its warmest in the run of these three months.
| Month | Belize City average high (°F) | Belize City average low (°F) | Belize City rain days | Sea at San Pedro (°F) | Sea at Placencia (°F) | Sea at Corozal (°F) |
|---|---|---|---|---|---|---|
| August | 89.8 | 76.8 | 11.0 | 86.7 | 87.6 | 89.6 |
| September | 90.0 | 76.3 | 12.5 | 87.4 | 88.8 | 89.9 |
| October | 88.1 | 74.3 | 13.7 | 86.5 | 87.1 | 87.3 |
In Belize City the afternoons are hot and the nights barely cool off, so the city feels warm around the clock. Rain falls on a good share of the days, a few more than in August and a few fewer than in October. Daylight lasts a little over twelve hours in the middle of the month, noticeably shorter than in the long days of August.
The sea is the gentlest part of the picture. Off Corozal Town in the north it reaches the warmth of a bathtub, off Placencia in the south it stays in the high 80s, and around San Pedro on Ambergris Caye it is in the upper 80s as well.
Inland, in the Cayo District around San Ignacio, you are among forest, river valleys and Maya ruins, where the green of the rainy season is the main event.
Where to go in Belize in September
Ambergris Caye and San Pedro
San Pedro is the September address for Saint George’s Caye Day, when the town hosts an annual regatta and the waterfront turns into a viewing stand. Ambergris Caye is the largest of several hundred cayes in the northern waters of Belize, and the barrier reef runs along its eastern side. Between the holiday parties, the days are for boat trips to the reef, long lunches of fresh fish and slow evenings on the docks.
A flight from Belize City to Ambergris Caye takes about 20 minutes, which makes the island an easy add-on to an arrival in the country. September is within the hurricane season, so the weather of the day shapes the plans here more than anywhere. Seaweed can also wash up on Caribbean beaches in some seasons, so the shoreline you picture may differ from the one you find.
Placencia and the southern coast
The Placencia Peninsula is a long finger of sand and villages in the Stann Creek District, with the sea on one side and a lagoon on the other. Seine Bight, just north of Placencia village, is a Garifuna community where most residents are Garifuna, and the drumming and cassava bread of that culture are part of what you meet on the peninsula. In September the sea here stays in the high 80s, warm enough for a long afternoon on the water.
This is a coast for people who like a village pace: a morning walk on the sand, a plate of rice and beans with stew chicken at a roadside kitchen, boat trips out to the cayes when the weather allows. The rain comes with the season, so keep your plans loose and let the day decide.
Corozal Town and the north
Corozal Town sits on the bay in the far north, a quiet waterfront town with a Spanish-speaking, Mestizo flavor, a seawall promenade and a plaza where families gather in the evening. The sea near the town is the warmest of our three reference points in September, and the breeze off the water is part of the town’s charm at the end of a hot day.
It is a place for travelers who prefer small towns to resort islands: market stalls, tamales, fry jacks for breakfast and conversations on park benches. During the national holidays, expect flags, music and school bands in the streets.
The Cayo District and Xunantunich
Inland, the Cayo District is the Belize of rivers, forest and Maya ruins, with San Ignacio as its hub. Xunantunich, whose name means Maiden of the Rock, was a civic and ceremonial center of the Belize Valley in the Late and Terminal Classic periods. Its plazas and tall temple rise from the forest and give the valley a sense of scale.
September is the green season here, and the hills look their lushest. It suits travelers who want to pair a few days of ruins and rivers with a stay on the coast, with the understanding that rain is part of the month.
What to do in Belize in September
The big events of the month are the national holidays, and they are best experienced on the street. Parades, marching bands, food stands and fireworks mark the days, and the whole country is in a festive mood in the second half of the month in particular.
Saint George’s Caye Day
Saint George’s Caye Day falls on September 10 and commemorates the 1798 Battle of St. George’s Caye. In San Pedro Town an annual regatta puts sailboats on the water, and the shoreline fills with spectators, music and food. Belize City also marks the day with its own parades and festivities.
Dress in the national colors, find a spot at the water’s edge and settle in for the afternoon. It is an easy way to see how Belizeans celebrate their history with sails, drums and a lot of good humor.
Independence Day
Independence Day is on September 21 and marks the day in 1981 when Belize, formerly British Honduras (renamed in 1973), was granted independence by Great Britain. Towns around the country hold parades with school bands, floats and dancers, and the day is a public celebration that feels like a family holiday on a national scale.
Towns around the country celebrate Independence Day with parades, school bands, floats and dancers. If you are in a smaller town, walk to the central plaza and follow the sound.
On the reef and in the forest
Between the holidays, the reef is the main draw. The Belize Barrier Reef is the longest in the western hemisphere, and its cayes and islands include Ambergris Caye, Lighthouse Reef, Glover’s Reef and the Turneffe Islands. Boat days to the reef are the classic outing from the coast.
Inland, spend a day at Xunantunich or on the rivers of the Cayo District. Choose your outdoor days with an eye on the sky, and keep a museum, a market or a long meal as your plan for the rainy hours.
Is Belize busy in September?
September is lively but in a local way, since the national holidays bring Belizeans out into the streets of their own towns. The two holidays give the month a festive rhythm, and San Pedro in particular fills with regatta spectators around Saint George’s Caye Day.
The place to feel the celebrations is wherever the parades are. The celebrations extend beyond San Pedro to communities around the country.
Quiet moments are easy to find away from the parade routes: a bench on the Corozal waterfront, a beach on the Placencia Peninsula, a trail in the Cayo hills. Since September sits in the middle of the wet season, many travelers plan around the weather rather than around crowds, and keep an easy schedule that can shift when a shower rolls in.
What to pack for Belize in September
On the coast and the cayes you dress for heat, sun and water, while the Cayo hills call for shoes that grip on wet ground. Everywhere, a rain layer earns its place in the bag.
- Light, quick-drying shirts and shorts for hot days on the coast and in town.
- A lightweight rain jacket or a compact umbrella for the showers of the wet season.
- Swimwear and a rash guard or sun shirt for days on the boat and on the reef.
- Sandals or water shoes for docks and beaches, plus closed shoes with grip for ruins and forest trails.
- A wide-brimmed hat and sunglasses for the sun between the showers.
- Something red, white or blue for the national celebrations.
Good to know before you go
The U.S. State Department rates Belize Level 2, “Exercise increased caution”, because of crime, and says the south side of Belize City has historically had the highest concentration of violent crime.
The Atlantic hurricane season runs from June 1 to November 30, and its peak comes on September 10, with most activity between mid-August and mid-October. Belize has no Pacific coast, so the Atlantic season is the one that matters. Hurricane Keith formed in September 2000 and caused extensive damage in Belize, a reminder that the month belongs to the season. Sargassum, a brown algae that floats in clumps and gives off a rotten-egg smell when it washes ashore, can reach Caribbean beaches in some seasons.
Is September a good time to visit Belize?
September is a good month for travelers who want Belize’s national celebrations, a very warm sea and green landscapes, and who are happy to plan around rain. The best region for the party is San Pedro on Ambergris Caye, thanks to its regatta, while Placencia and Corozal Town offer a quieter, village-scale version of the month.
September keeps the wet-season character of both neighboring months but adds Belize’s national celebrations. Compared with October, the air is warmer and the sea is warmer, with a few fewer rain days. The three months share the same wet-season character, and September sits right in the middle of it.
It is a less natural fit for travelers who want a fixed schedule of outdoor days, since the hurricane season peaks in these weeks and the weather can change a plan. The reward is a country in a festive mood, with the sea at its warmest of the three months and the forest in full green. What sets the month apart is the sequence of the holidays: the regatta off San Pedro early on, then Independence Day, with flags, bands and fireworks in the plaza of nearly every town.
Sources
- NOAA NCEI, GHCN-Daily station BHM00078583 (Philip S. W. Goldson International Airport, Belize City), normals 1991-2020 computed from the daily record (https://www.ncei.noaa.gov/access/services/data/v1?dataset=daily-summaries&stations=BHM00078583), checked October 11, 2026
- Open-Meteo Marine API, average 2015-2024, checked October 11, 2026
- sunrise-sunset.org, sunrise and sunset calculated for the 15th of the month, checked October 11, 2026
- Wikipedia, Public holidays in Belize (https://en.wikipedia.org/wiki/Public_holidays_in_Belize), checked October 11, 2026
- Wikipedia, Garifuna Settlement Day (https://en.wikipedia.org/wiki/Garifuna_Settlement_Day), checked October 11, 2026
- NOAA National Hurricane Center, Climatology (https://www.nhc.noaa.gov/climo/), checked October 11, 2026
- Wikipedia, Hurricane Hattie (https://en.wikipedia.org/wiki/Hurricane_Hattie), checked October 11, 2026
- Wikipedia, Hurricane Keith (2000) (https://en.wikipedia.org/wiki/Hurricane_Keith_(2000)), checked October 11, 2026
- Wikipedia, Hurricane Dean (https://en.wikipedia.org/wiki/Hurricane_Dean), checked October 11, 2026
- Wikipedia, Hurricane Lisa (2022) (https://en.wikipedia.org/wiki/Hurricane_Lisa_(2022)), checked October 11, 2026
- Wikipedia, Hurricane Earl (2016) (https://en.wikipedia.org/wiki/Hurricane_Earl_(2016)), checked October 11, 2026
- Wikipedia, Hurricane Iota (https://en.wikipedia.org/wiki/Hurricane_Iota), checked October 11, 2026
- Belize Tourism Board, Sargassum resource (https://www.belizetourismboard.org/tourism-resources/sargassum-resource/), checked October 11, 2026
- Wikipedia, Climate of Belize (https://en.wikipedia.org/wiki/Climate_of_Belize), checked October 11, 2026
- Wikipedia, Geography of Belize (https://en.wikipedia.org/wiki/Geography_of_Belize), checked October 11, 2026
- Wikivoyage, San Pedro (Belize) (https://en.wikivoyage.org/wiki/San_Pedro_(Belize)), checked October 11, 2026
- Wikipedia, Xunantunich (https://en.wikipedia.org/wiki/Xunantunich), checked October 11, 2026
- Wikipedia, Seine Bight (https://en.wikipedia.org/wiki/Seine_Bight), checked October 11, 2026
- U.S. Department of State, Belize Travel Information, Entry and exit requirements (https://travel.state.gov/), checked October 11, 2026
- Belize Immigration Department, Visitor's permit (https://immigration.gov.bz/permits/visitors-permit/), checked October 11, 2026
- Tropic Air, Belize immigration and visas (https://www.tropicair.com/belize-immigration-visas/), checked October 11, 2026
- Maya Island Air, Belize visa requirements (https://www.mayaislandair.com/belize-visa-requirements/), checked October 11, 2026
- U.S. Department of State, Belize Travel Advisory, Level 2, March 11, 2026 (https://travel.state.gov/), checked October 11, 2026