Wetter in La Fortuna im September
September in La Fortuna: heiß, sehr nass, mit sauberer Luft – ein Glücksspiel: 29 Regentage.
Aktualisiert: September 2026 · Klimanormalwerte aus der ERA5-Reanalyse
Platz 9 von 12 Monaten in La Fortuna · Platz 1182 von 1413 Reisezielen im September · Komfort 57/100 (Stufe D)
- Tagsüber
- 28°C
- Nachts
- 21°C
- Regentage
- 29
- Sonne
- 8 h
- Luftfeuchte
- 92%
- Tageslicht
- 12 h

Notizen von Reisenden zu La Fortuna im September
La Fortuna-forum threads on September weather confirm this sits within the wettest stretch of the local year, mornings generally the more reliable window before cloud and a real system build through the afternoon. Posters call the Arenal volcano itself genuinely hit-or-miss for visibility, cloud cover and showers frequently obscuring the peak for stretches at a time. Regulars describe humidity as staying close to saturated throughout, laundry famously refusing to fully air out and a warm afternoon feeling considerably heavier than the same reading in a drier month. Posters recommend scheduling hikes for the morning, afternoon plans genuinely riskier. Regulars call the hot springs and waterfalls worth the trip regardless of volcano visibility, both largely unaffected by a passing shower. Posters recommend real rain gear. The record: 27.5C days feeling like a punishing 33C, 21.4C nights, an extraordinarily high 270mm across nearly 29 days and 92 percent humidity.
Andere Monate in La Fortuna
La Fortuna-forum threads on a January visit describe this as genuinely the start of the more favorable season, posters naming it one of the better months for a real shot at seeing the Arenal volcano's peak. Regulars call the summit genuinely elusive regardless of month, several posters naming roughly sixty clear-view days a year as the honest baseline. Posters call fast-drying clothes and rain gear worth packing no matter the month, several regulars naming this standard advice given how much cloud cover varies day to day. Regulars call January still genuinely warm and humid, several threads naming this a real contrast to how the season's reputation sounds. Posters recommend real flexible plans around volcano viewing, several regulars calling this standard given how unpredictable cloud cover remains even in January. The record: 25.7C days, 19.7C nights, 101.7mm across over 15 days and 89 percent humidity.
La Fortuna-forum threads on April weather describe conditions as genuinely intense in town, posters citing readings near ninety-five Fahrenheit on the hottest days. Regulars call Arenal National Park itself noticeably cooler, highs there typically running in the upper seventies to low eighties even when La Fortuna proper feels considerably warmer. Posters recommend the La Fortuna Waterfall, the 1968 Park, El Silencio Trail and the Mistico Hanging Bridges as strong April picks, several regulars naming all four in the same itinerary. Regulars recommend a Rio Celeste day tour as a real addition for anyone with an extra day, the drive there considered worthwhile on its own. Posters recommend Don Rufino for a nicer dinner and Soda La Parada for a casual, local option, both named repeatedly across April trip reports. The record: 28.9C days feeling like 33C, 21C nights, an extraordinarily high 58.8mm across over 11 days and 78 percent humidity.
La Fortuna-forum threads on mid-July weather describe a familiar daily pattern, posters calling on-and-off showers several times a day standard alongside genuinely hot, humid conditions at midday. Regulars call a heavy afternoon downpour the most likely single event, though some days stay largely sunny throughout with no real disruption. Posters recommend a real umbrella and rain jacket regardless of forecast, conditions here capable of shifting within the hour. Regulars call nearly every tour still running in this weather, zip-lining the main exception when conditions turn genuinely severe. Posters describe July as still worth visiting despite the wetter pattern, the volcano and hot springs both rewarding regardless of a passing shower. Regulars recommend flexible daily plans given how unpredictable the exact timing runs this time of year. The record: 26.6C days feeling like 31C, 21.4C nights, an extraordinarily high 251.2mm across nearly 28 days and 93 percent humidity.
La Fortuna-forum threads on whether the wetter season is really that bad are consistent the answer is no, one poster direct nobody can reliably predict exactly when a shower hits, beyond March running noticeably calmer than the rest of the year. Regulars describe a typical June day as clear through the morning, with heavier activity building through afternoon and evening before clearing again, most operators running tours on a morning schedule to work around this pattern. Posters call waterfall visits and nature walks genuinely excellent in June, the surrounding rainforest at its greenest, with hotel and tour prices noticeably lower than peak season. A poncho and fast-drying clothing are standing advice regardless of forecast. Regulars call June entirely workable for a first-time visitor willing to plan mornings around outdoor activities. The record: 27.3C days feeling like a punishing 32C, 21.7C nights, an extraordinarily high 258mm across 29 days and 93 percent humidity.
Schreib deine eigene Notiz – direkt auf der Karte, bei La Fortuna.
Klimanormalwerte La Fortuna – September
Monatliche Durchschnittswerte aus der ERA5-Reanalyse. Der AQI ist der mittlere US-Luftqualitätsindex des Monats.
Andrang in La Fortuna im September
Wie voll der Ort selbst ist – Schul- und Massenferien, die Monate, die die Redaktion markiert hat, und wie begehrt das Wetter sie macht. Fließt nie in den Komfort-Score ein.
ZwischensaisonSchulferien in 2 der Herkunftsländer, aus denen die Gäste kommen, ein gewöhnlicher Monat(geschätzt)
HochbetriebViel losZwischensaisonRuhig
Die besten Monate fürs Wetter in La Fortuna
Gerankt nach dem Klimakomfort-Score dieses Reiseziels übers Jahr – etwas anderes als der Andrang (siehe Andrang oben).
Ordentliches WetterDie beste Wetterphase in La Fortuna reicht von Februar bis April.
Bestes WetterOrdentliches WetterSchwierigstes Wetter
Was ist los in La Fortuna im September
Wiederkehrende saisonale Events, Naturschauspiele, Schließungen und Feiertage – kuratiert und mit Quelle.
- Saison
Green season
1. Mai – 30. Nov. · meistMonsunRain most afternoons, rates down, waterfalls at full noise. Arenal makes its own cloud, so the volcano is a lottery in these months whatever the forecast for the town says.
- Saison
Rivers at full flow
1. Sep. – 15. Nov. · meistHochwasserRisikoThe Balsa and the Toro run hardest in September and October and the rafting grades go up with them. After a heavy night the Rio Celeste loses its blue for a day or two, which catches people out.
- Saison
Wet season
MonsunRisiko29 rainy days and about 270 mm in the month — the real kind of rainy season, not afternoon showers.
aus den Klimanormalwerten
In der Nähe ist was los
Im Umkreis von 300 km um La Fortuna – ein Tagesausflug oder ein kurzer Abstecher – mit etwas, das diesen Monat los ist. Fließt nie in den Komfort-Score ein.
Wo liegt La Fortuna?
La Fortuna im September – häufige Fragen
- Ist der September eine gute Reisezeit für La Fortuna?
- September in La Fortuna: heiß, sehr nass, mit sauberer Luft – ein Glücksspiel: 29 Regentage. Beim Komfort-Score von SeasonMap liegt der Monat für La Fortuna auf Platz 9 von 12 (57/100).
- Wie ist das Wetter in La Fortuna im September?
- Im September liegen die Tageshöchstwerte in La Fortuna im Schnitt bei 27.5°C und die Tiefstwerte bei 21.4°C, mit rund 270.1 mm Regen an etwa 28.7 Regentagen.
- Wie ist die Luftqualität in La Fortuna im September?
- La Fortuna hat im September einen mittleren US-Luftqualitätsindex (AQI) von etwa 17.
Im Umkreis von 300 km: Jacó: Humpback whales, etwa 15. Juli – 15. Nov. und Nosara: Arribada at Ostional, etwa 1. Juli – 31. Dez..