Wedding weather data · Costa Rica
Wedding weather in Guanacaste, Costa Rica
In Guanacaste, Costa Rica, the driest months for a wedding are January, February, and March, when rain falls on about 1% of days. The wettest is September, with rain on about 87% of days. Here is the full picture, month by month, from 10 years of daily weather records.
Rain odds and temperatures by month
| Month | Chance of a rainy day | Heavy rain | Rainy days | Avg high | Avg low | Sunshine |
|---|---|---|---|---|---|---|
| January | 1% | 0% | 0.3 | 86°F (30°C) | 73°F (23°C) | 10.9 h/day |
| February | 2% | 0% | 0.4 | 88°F (31°C) | 73°F (23°C) | 11.9 h/day |
| March | 2% | 0% | 0.6 | 91°F (33°C) | 73°F (23°C) | 12 h/day |
| April | 16% | 2% | 4.8 | 92°F (34°C) | 75°F (24°C) | 11.6 h/day |
| May | 60% | 22% | 18.5 | 88°F (31°C) | 75°F (24°C) | 9.9 h/day |
| June | 77% | 31% | 23.2 | 85°F (29°C) | 74°F (23°C) | 9.4 h/day |
| July | 56% | 15% | 17.3 | 85°F (29°C) | 74°F (23°C) | 9.6 h/day |
| August | 65% | 22% | 20.3 | 85°F (30°C) | 73°F (23°C) | 9.5 h/day |
| September | 87% | 38% | 26.1 | 84°F (29°C) | 73°F (23°C) | 8.8 h/day |
| October | 82% | 37% | 25.5 | 83°F (28°C) | 72°F (22°C) | 8.4 h/day |
| November | 38% | 10% | 11.3 | 83°F (28°C) | 72°F (22°C) | 9.7 h/day |
| December ✦ | 5% | 1% | 1.7 | 84°F (29°C) | 73°F (23°C) | 10.7 h/day |
Source: ERA5 reanalysis (Copernicus/ECMWF) via Open-Meteo open data, CC BY 4.0, daily data 1991–2020 for 10.63, -85.44. Rainy day ≥ 1 mm, heavy rain ≥ 10 mm. Climatology, not a forecast.
Best months for a wedding in Guanacaste, Costa Rica
Weighing low rain odds with comfortable temperatures (roughly 18–29 °C / 65–84 °F highs), the best months for an outdoor wedding in Guanacaste, Costa Rica are December.
When to be careful
September is the wettest month in Guanacaste, Costa Rica: rain falls on about 87% of days, and 38% of days bring heavy rain (10 mm or more). Book a solid backup if you marry then.
How to read these numbers
A "rainy day" is a day with at least 1 mm (0.04 in) of rain. A 30% chance means about 3 in 10 days in that month saw at least a little rain, often a short shower. For your exact date and venue, use our free rain odds tool.
Guanacaste, Costa Rica weather month by month
What a wedding day in Guanacaste, Costa Rica usually looks like in each month, from 30 years of daily weather records.
Guanacaste, Costa Rica weather in January
In January, it rains (1 mm or more) on 1% of days in Guanacaste, Costa Rica, about 0.3 days in the month, and 0% of days bring heavy rain. Typical highs are 86°F (30°C), lows 73°F (23°C), with around 10.9 hours of sunshine a day. One of the driest months here: a good bet for an outdoor ceremony.
Guanacaste, Costa Rica weather in February
In February, it rains (1 mm or more) on 2% of days in Guanacaste, Costa Rica, about 0.4 days in the month, and 0% of days bring heavy rain. Typical highs are 88°F (31°C), lows 73°F (23°C), with around 11.9 hours of sunshine a day. One of the driest months here: a good bet for an outdoor ceremony.
Guanacaste, Costa Rica weather in March
In March, it rains (1 mm or more) on 2% of days in Guanacaste, Costa Rica, about 0.6 days in the month, and 0% of days bring heavy rain. Typical highs are 91°F (33°C), lows 73°F (23°C), with around 12 hours of sunshine a day. One of the driest months here: a good bet for an outdoor ceremony.
Guanacaste, Costa Rica weather in April
In April, it rains (1 mm or more) on 16% of days in Guanacaste, Costa Rica, about 4.8 days in the month, and 2% of days bring heavy rain. Typical highs are 92°F (34°C), lows 75°F (24°C), with around 11.6 hours of sunshine a day. Average odds: plan outdoors, but book a rain plan you would actually like.
Guanacaste, Costa Rica weather in May
In May, it rains (1 mm or more) on 60% of days in Guanacaste, Costa Rica, about 18.5 days in the month, and 22% of days bring heavy rain. Typical highs are 88°F (31°C), lows 75°F (24°C), with around 9.9 hours of sunshine a day. Average odds: plan outdoors, but book a rain plan you would actually like.
Guanacaste, Costa Rica weather in June
In June, it rains (1 mm or more) on 77% of days in Guanacaste, Costa Rica, about 23.2 days in the month, and 31% of days bring heavy rain. Typical highs are 85°F (29°C), lows 74°F (23°C), with around 9.4 hours of sunshine a day. One of the wettest months here: plan a covered ceremony or a tent from the start.
Guanacaste, Costa Rica weather in July
In July, it rains (1 mm or more) on 56% of days in Guanacaste, Costa Rica, about 17.3 days in the month, and 15% of days bring heavy rain. Typical highs are 85°F (29°C), lows 74°F (23°C), with around 9.6 hours of sunshine a day. Average odds: plan outdoors, but book a rain plan you would actually like.
Guanacaste, Costa Rica weather in August
In August, it rains (1 mm or more) on 65% of days in Guanacaste, Costa Rica, about 20.3 days in the month, and 22% of days bring heavy rain. Typical highs are 85°F (30°C), lows 73°F (23°C), with around 9.5 hours of sunshine a day. Average odds: plan outdoors, but book a rain plan you would actually like.
Guanacaste, Costa Rica weather in September
In September, it rains (1 mm or more) on 87% of days in Guanacaste, Costa Rica, about 26.1 days in the month, and 38% of days bring heavy rain. Typical highs are 84°F (29°C), lows 73°F (23°C), with around 8.8 hours of sunshine a day. One of the wettest months here: plan a covered ceremony or a tent from the start.
Guanacaste, Costa Rica weather in October
In October, it rains (1 mm or more) on 82% of days in Guanacaste, Costa Rica, about 25.5 days in the month, and 37% of days bring heavy rain. Typical highs are 83°F (28°C), lows 72°F (22°C), with around 8.4 hours of sunshine a day. One of the wettest months here: plan a covered ceremony or a tent from the start.
Guanacaste, Costa Rica weather in November
In November, it rains (1 mm or more) on 38% of days in Guanacaste, Costa Rica, about 11.3 days in the month, and 10% of days bring heavy rain. Typical highs are 83°F (28°C), lows 72°F (22°C), with around 9.7 hours of sunshine a day. Average odds: plan outdoors, but book a rain plan you would actually like.
Guanacaste, Costa Rica weather in December
In December, it rains (1 mm or more) on 5% of days in Guanacaste, Costa Rica, about 1.7 days in the month, and 1% of days bring heavy rain. Typical highs are 84°F (29°C), lows 73°F (23°C), with around 10.7 hours of sunshine a day. Average odds: plan outdoors, but book a rain plan you would actually like.
Frequently asked questions
What is the best month to get married in Guanacaste, Costa Rica?
Based on 10 years of weather data, January is the driest month in Guanacaste, Costa Rica, with rain on about 1% of days and average highs around 86°F (30°C). Overall, the best months for an outdoor wedding there are December.
What is the rainiest month in Guanacaste, Costa Rica?
September is the rainiest month in Guanacaste, Costa Rica: on average 26.1 days of the month see at least 1 mm of rain, and about 38% of days bring heavy rain.
Will it rain on my wedding day in Guanacaste, Costa Rica?
Nobody can forecast your wedding day months ahead. What history shows is the chance of rain: in December it rains on about 5% of days in Guanacaste, Costa Rica. Check your exact date with our free rain odds tool, then watch the real forecast from about 7 days out.