Weather in Guanacaste in November

How November compares

November is the 11th warmest month of the year in Guanacaste and ranks 16th of 134 destinations we compare for November - see where else is hot in November. Against London's average high of 10.4°C in November, Guanacaste is 18.0°C warmer by day and 17.3°C warmer at night.

Daytime and night-time in November

The typical November day in Guanacaste peaks at 28.4°C, but that is an average: the warmest 10% of days reach 30.0°C or more. About 99% of days top 25°C and 1 in 10 pass 30°C. Nights average 22.2°C; one night in ten drops to 21.2°C or lower, so pack a layer for evenings. Between 1991 and 2020 the hottest November day here reached 32.2°C (2019-11-27) and the coldest night 17.8°C (1999-11-21).

Rain in November

Wet (more than 8 rainy days): about 12 days with 1 mm or more, 114 mm in total. Year to year it varies a lot - the wettest November was 2020 with 564 mm, the driest 2012 with 4 mm. Humidity averages 84%, which makes the heat feel heavier than the thermometer suggests.

Sea temperature in November

The sea averages 27.6°C - warm enough to swim (22°c+). Depending on the year it ranges from 26.8°C to 28.2°C. For the warmest sea here, come in May (28.9°C).

Sunshine and daylight

Around 3.6 hours of sunshine a day (estimated from cloud cover), 11.5 hours of daylight: the sun rises about 05:37 and sets about 17:15 local time in mid-November. Average cloud cover is 69%.

Is November a good time to visit Guanacaste?

It is a reasonable choice: hot days but expect showers. The best months for Guanacaste on our scoring are February, January, December; months averaging 25°C or more: Jan, Feb, Mar, Apr, May, Jun, Jul, Aug, Sep, Oct, Nov, Dec.

Warm enough for swimming, humid enough to slow down

Pack for hot weather, even though November is among Guanacaste's cooler months. Nights average around 22°C, so evenings usually call for light clothing rather than layers for warmth. Humidity averages 84%, which can make the heat feel more tiring, particularly when you are active. Keep strenuous plans away from midday and favour loose, breathable clothes. Days reaching 30°C account for just 10% of the month, so more intense heat is not the usual pattern. The sea averages 27.6°C, comfortably warm for swimming. That makes November well suited to travellers who want warm water and an easy pace, provided they can tolerate sticky conditions.

Leave room for rain and cloud

The main compromise is the amount of wet and cloudy weather. November brings 114.0 mm of rain on average, so a lightweight waterproof and somewhere to keep belongings dry are sensible additions to your bag. Sunshine averages about 3.6 hours within 11.5 hours of daylight: there is time to be outdoors, but daylight does not mean clear skies. The monthly figures do not tell you when rain will arrive, so avoid building your plans around an assumed dry morning or afternoon. This month suits travellers happy to adjust activities to the weather; it is less convincing if dependable sunshine is the main reason for the trip.