Granada weather in September

September in Granada: sweltering, soaked, with clean air — a gamble, with 26 rainy days.

Updated September 2026 · climate normals from ERA5 reanalysis

Granada🇳🇮 Nicaragua · Northern Central America · City60
  1. 81Jan
  2. 80Feb
  3. 77Mar
  4. 73Apr
  5. 58May
  6. 53Jun
  7. 67Jul
  8. 64Aug
  9. 60Sep
  10. 49Oct
  11. 66Nov
  12. 78Dec

#9 of 12 months in Granada · #1131 of 1413 destinations to visit in September · comfort 60/100 (tier C)

Days
30°C
Nights
25°C
Wet days
26
Sun
10 h
Humidity
85%
Daylight
12 h
Granada, Nicaragua
Photo: Guillaume Baviere from Uppsala, Sweden · CC BY-SA 2.0

Traveller notes on Granada in September

Notes from nearby Ometepe (52 km away)

Granada doesn't have its own notes for September yet — these are about Ometepe, close enough to share the season.

Ometepe's forum genuinely likes September - breezy mornings and evenings, plenty of hot sun, and rain that keeps the island's twin volcanoes lush and green rather than ruining the trip. The rain pattern is hard and short rather than an all-day soak, often overnight or in the morning, and posters were clear it's rare for a day to be a total washout. The one real downside mentioned repeatedly: even with quick-drying streets, the volcanic soil stays muddy in low spots, so sturdy footwear matters. September is also low season, meaning noticeably cheaper prices across the island.
LakeNicaraguaIslandRegular · September · 1 month ago · about Ometepe · Read more on Tripadvisor ↗

Other months in Granada

Granada's forum makes clear July's rainy season here isn't a monsoon: rain shows up on maybe four or five days a week, usually a short, heavy burst of two or three hours rather than an all-day soak, and posters said it genuinely doesn't get in the way of sightseeing or day trips. Hot, partly cloudy days with the occasional spectacular thunderstorm is the typical pattern, and the payoff is a country turning noticeably green compared to the dry months. The one real downside forum regulars flagged: bugs are at their worst early in the rainy season.
LakeNicaraguaRegular · July · 1 month ago · Read more on Tripadvisor ↗
Forum posters describe January nights typically in the low-to-mid-70sF, warming to the upper-80s to low-90sF by day - genuinely hot, with Granada named by posters as one of the hottest cities in the country on average. Posters consistently call this the dry season here: the surrounding landscape turns brown and dusty, a sharp contrast to the lush green of the wetter months. Posters recommend the November-January stretch as the best overall window for a first visit to Granada and Nicaragua generally, though they note conditions keep warming through January itself - by the back half of the month, several posters mention needing a fan overnight as nights stop cooling off as much as earlier in the month.
Tripadvisor community · January · 1 month ago · Read more on Tripadvisor ↗

Add your own note from Granada's card on the map.

Granada climate normals — September

Daytime high30°C / 85°F🔥 sweltering
Nighttime low25°C / 77°F
Feels like (high)35°C / 95°F
Rainfall195 mm / 7.7 in⛈ soaked
Rainy days26 days
Humidity85%💦 very humid
Dew point24°C / 75°F
Sunshine10 h/day
Daylight12.2 h
Wind14 km/h / 9 mph
Air quality (US AQI)25🍃 good

Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.

Crowds in Granada in September

How busy the place itself is — school and mass holidays, the months an editor tagged, and how sought-after the weather makes them. Never part of the comfort score.

BusyIndependence Day, school holidays in 2 of the markets that fill it(estimated)

JFMAMJJASOND

Peak crowdsBusyShoulder seasonQuiet

Best months for Granada's weather

Ranked by this destination's own climate comfort score across the year — a different thing from how busy it gets (see Crowds above).

Fair weatherGranada's weather peaks December–February, best around January.

JFMAMJJASOND

Best weatherFair weatherToughest weather

What's on in Granada in September

Recurring seasonal events, natural spectacles, closures and holidays — curated and sourced.

  • Season

    Green season

    1 May – 30 Nov · usuallyMonsoon

    Short afternoon and evening downpours return most days, the volcano slopes and islets turn green and prices ease. Mornings are usually clear enough for Lake Nicaragua boat trips; the wettest weeks come in September and October. Source ↗

  • Holiday

    Independence Day

    14–15 SepNational holidayClosuresCrowded

    Torch relays and school bands fill the streets around the central park on the fourteenth and fifteenth. Banks and offices close and the Managua road is busy in both directions. Source ↗

What's on around the world in September →

Nearby, and something's on

Within 300 km of Granada — a day trip or a short hop — with something on this month. Never part of the comfort score.

Where is Granada?

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Granada in September — FAQ

Is September a good time to visit Granada?
September in Granada: sweltering, soaked, with clean air — a gamble, with 26 rainy days. It ranks #9 of 12 months for Granada on SeasonMap's comfort score (60/100).
What is the weather like in Granada in September?
In September, Granada averages a daily high of 29.6°C and a low of 24.8°C, with about 195.3 mm of rain over roughly 26.1 rainy days.
What is the air quality in Granada in September?
Granada has a mean US Air Quality Index of about 25 in September.

Within 300 km: Nosara's Arribada at Ostional around 1 Jul – 31 Dec, and Jacó's Humpback whales around 15 Jul – 15 Nov.