4.7 out of 5 — 426844 votes

Guyane, French Guiana

Guyane is on UTC−3 all year under the America/Cayenne time zone. There is no daylight-saving clock change. Cayenne, Kourou, Saint-Laurent-du-Maroni, and other communities use the same civil time, although their sunrise moments are not identical.

Cayenne, French Guiana

Friday, 4 September 2026

UTC−3 · America/Cayenne

Time and sun data for Cayenne — the largest city of Guyane

The sun in Cayenne

Sunrise 06:24 Solar noon 12:30 Sunset 18:36 Daylight 12 h 12 min Night 11 h 48 min Civil twilight 06:03 – 18:57

French Guiana · 600 cities · page 1 of 3

Largest cities

All cities — page 1

Current time in Guyane, French Guiana

Guyane is the French name for French Guiana. Its clocks run three hours behind UTC in every month. Unlike metropolitan France, the territory does not alternate between a winter offset and a summer offset.

A stable offset makes UTC conversion simple, but international comparisons can still change. Paris moves between standard and summer time, so the gap between Cayenne and Paris is not constant over the full year. The change happens on the European side; clocks in Guyane stay where they are.

The America/Cayenne identifier is preferable when saving appointments in software because it describes the locality as well as its rules. For a plain timestamp, adding UTC−3 prevents confusion with metropolitan French time or with another place that happens to have the same local hour.

Urban centres and distances within Guyane

Cayenne is the capital. Matoury and Remire-Montjoly form part of the wider urban area around it. Kourou lies farther west along the coast, and Saint-Laurent-du-Maroni is a principal centre near the western border.

All communes use the same UTC−3 offset. No seasonal clock correction is needed for travel inside Guyane. Local sunrise should be checked for the actual commune. International calls should include both the date and named destination.

The territory extends far enough from east to west for solar events to occur at slightly different moments. A clock reading for Cayenne is valid civil time in Saint-Laurent-du-Maroni, but a Cayenne sunrise time is not the most precise choice for someone observing the horizon in the west.

How to interpret local sunrise

Near-equatorial geography keeps the broad pattern of day and night more even than at high latitudes. Even so, sunrise and sunset move gradually during the year. The direction of that movement and its size are better read from a dated local calculation than inferred from the season names used in Europe.

Calculated sunrise assumes a clear astronomical horizon. Guyane’s real horizon may include forest, urban structures, riverbanks, or cloud. These conditions change visibility, while latitude, longitude, date, and the standard definition determine the published solar time.

Guyane has no patience for changing the clocks; coordinating with Paris supplies enough arithmetic. For practical planning, dawn may be more useful than sunrise because outdoor visibility begins beforehand. Sunset is similarly followed by twilight. Anyone working near rivers, roads, forests, or the coast should combine the solar schedule with weather and local conditions.

Questions and answers
Are Guyane and French Guiana the same place?
Yes. Guyane is the French name for French Guiana.
What time zone does Cayenne use?
Cayenne uses America/Cayenne, with an offset of UTC−3 throughout the year.
Do all communes in Guyane have the same time?
Yes. Civil time is uniform across the territory, though sunrise and sunset vary slightly by location.

Related tools and information

All pages