Dawn and first light in Rio de Janeiro
First light (civil dawn) in Rio de Janeiro today is at 05:09, about 23 minutes before the sun rises at 05:32. The very first glow, astronomical dawn, begins at 04:17. Times for Friday, 2 October 2026, in Rio de Janeiro's local time zone.
| Stage | What it means | Local time |
|---|---|---|
| Astronomical dawn | sun 18° below, first trace of light | 04:17 |
| Nautical dawn | sun 12° below, horizon visible at sea | 04:43 |
| Civil dawn (first light) | sun 6° below, enough light to see | 05:09 |
| Sunrise | the sun clears the horizon | 05:32 |
Dawn in Rio de Janeiro, stage by stage
Dawn in Rio de Janeiro unfolds in three stages before the sun appears. Astronomical dawn is the first faint light, when the sun is 18 degrees below the horizon. Nautical dawn follows at 12 degrees, and civil dawn, the moment there is enough light to see and move around, arrives at 6 degrees below. This civil dawn is what most people call first light. From there the sky brightens quickly to sunrise. The whole sequence is longer at high latitudes, where the sun climbs toward the horizon at a shallow angle, and short and fast near the equator. Every time here is computed for Rio de Janeiro's coordinates and shown in its local time zone.
Frequently asked questions about dawn in Rio de Janeiro
What time is first light in Rio de Janeiro today?
First light (civil dawn) in Rio de Janeiro is at 05:09 on Friday, 2 October 2026, about 23 minutes before sunrise at 05:32. All times are in Rio de Janeiro's local time zone.
What is the difference between dawn and sunrise in Rio de Janeiro?
Dawn is the growing twilight before the sun appears; sunrise is the single instant the sun's edge clears the horizon in Rio de Janeiro. First light (civil dawn) comes first, then sunrise.
When does astronomical dawn start in Rio de Janeiro?
Astronomical dawn, the first faint light with the sun 18 degrees below the horizon, begins at 04:17 in Rio de Janeiro on Friday, 2 October 2026.
Every time on this page is computed from Rio de Janeiro's coordinates with SunCalc, not estimated or looked up from a table.