Discover French Guiana
Very few tourists make it to this small South American country. It's a shame, because nature in French Guiana is still pure and unspoiled.
Kourou Weather in May
During May, Kourou experiences high daytime temperatures of 29°C (84°F) and cooler nights around 25°C (77°F). As the wettest month of the year, expect frequent rainfall.
Rainfall in Kourou in May
As part of the rainy season, Kourou sees around 26 days of rain in May, with an average of 406 mm (16 in). The rain this month falls heavily when it arrives. Late afternoons in particular can see strong showers, so waterproofs are worth keeping handy.
Temperature in Kourou in May
Daytime temperatures in Kourou reach 29°C (84°F) in May, dropping to 25°C (77°F) at night. Overall, the month follows a fairly predictable daily temperature pattern. With lows around 25°C (77°F), the nights are warm enough that a sheet is usually all you need for bedding.
Sunshine in Kourou in May
The area enjoys a moderate level of sunlight, with around 119 hours. It's a good balance between sunny and rainy days.If you prefer dry days with pleasant temperatures, May may not be the ideal month to visit Kourou. Our weather planner can help you explore destinations with more pleasant weather conditions.
Kourou Temperature in May
Min Temperature
25°C (77°F)
Max Temperature
29°C (84°F)
Chance of Rain
85%
Precipitation
406 mm (16 in)
Rainy days
26 days
Sunshine
119 hours *
Percentage Sunshine
*
* Data from: Cayenne, French Guiana (42 KM, 26 Miles).
Kourou Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Kourou - and find the best time to visit.
Daily Historical Temperatures
48-year average (1976-2025)
Based on our historical records, temperatures in Kourou typically stay consistent throughout May, with daily highs averaging around 29°C (84°F). Nights are warm, with lows around 24°C (75°F).
Average temperatures in May
Daily Historical Precipitation
48-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in May
Historical weather records for Kourou in May
Browse day-by-day weather records for Kourou spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Kourou historical weather extremes in May
The extremes listed below come from historical weather data collected in Kourou from 1992 through 2026.
- The warmest day in May was on May 15, 2024, with a maximum of 33°C (91°F).
- On May 6, 2003, Kourou saw its coldest May day with temperatures maxing out at 24°C (75°F).
- The lowest overnight temperature recorded in May was 15°C (59°F) (May 26, 2019).
- Peak precipitation in May occurred on May 20, 2013, when 122 mm (4.8 in) of precipitation was measured.
Best Places in French Guiana in May
Find out more about the weather in French Guiana and which places have the best travel conditions in this month. See all of French Guiana in May →
perfect weather
pleasant
tolerable
unpleasant
poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).
What to Wear in Kourou in May
Warm temperatures in May make for comfortable sightseeing weather. Pack breathable fabrics like cotton shirts, knee-length shorts or skirts, and comfortable walking shoes. A thin long sleeve for indoor spaces is handy. Heavy rain is guaranteed, please bring a good poncho and waterproof everything! It won't hurt to bring your sunglasses along, as you'll see some sunny periods.
What To Do in Kourou in May
We rated the following activities from 1 (least suitable) to 10 (best) to do.
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Swimming7/10 -
Cycling7/10 -
Walking7/10 -
Camping6/10 -
Outdoor sports7/10
Kourou 3-Day Forecast
More climate data for Kourou
See the full Kourou climate overview or explore weather in French Guiana.
Popular in May
Where to go in May - average daytime high across popular destinations.
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