Moderate Activity 🌒 2% Updated live

Aurora Australis Forecast for
Rio Grande, Brazil Tonight

Current Southern Lights (Aurora Australis) conditions for Rio Grande, Rio Grande do Sul, Brazil. Latitude 32°S · AACGM-v2 magnetic latitude 26.1°S.

Quick Summary: The estimated Southern Lights outlook for Rio Grande peaks at 0% over the next 24 hours. No suitable viewing window.

Aurora forecast

0%

Estimated

Highest estimate · next 24 hours

Viewing window

No suitable viewing window

America/Sao_Paulo

Kp index

3.33

Moderate

Planetary geomagnetic activity

Cloud cover

100%

Overcast

Current sky visibility

Aurora

Tonight's Verdict

Low aurora probability in Rio Grande tonight. Check back tomorrow for updated conditions.

Hourly Forecast · Estimated

21
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03
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09
09:00 — 0%
10:00 — 0%
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15
15:00 — 0%
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19:00 — 0%
20:00 — 0%
21:00 UTC03:00 UTC09:00 UTC15:00 UTC20:00 UTC
Time (UTC)Estimated (%)
2026-10-12T21:00:00.000Z0%
2026-10-12T22:00:00.000Z0%
2026-10-12T23:00:00.000Z0%
2026-10-13T00:00:00.000Z0%
2026-10-13T01:00:00.000Z0%
2026-10-13T02:00:00.000Z0%
2026-10-13T03:00:00.000Z0%
2026-10-13T04:00:00.000Z0%
2026-10-13T05:00:00.000Z0%
2026-10-13T06:00:00.000Z0%
2026-10-13T07:00:00.000Z0%
2026-10-13T08:00:00.000Z0%
2026-10-13T09:00:00.000Z0%
2026-10-13T10:00:00.000Z0%
2026-10-13T11:00:00.000Z0%
2026-10-13T12:00:00.000Z0%
2026-10-13T13:00:00.000Z0%
2026-10-13T14:00:00.000Z0%
2026-10-13T15:00:00.000Z0%
2026-10-13T16:00:00.000Z0%
2026-10-13T17:00:00.000Z0%
2026-10-13T18:00:00.000Z0%
2026-10-13T19:00:00.000Z0%
2026-10-13T20:00:00.000Z0%
How to read this forecast

The next 24 hours use calculated local darkness and a retained aurora activity heuristic. They are not a measured or statistically calibrated chance of seeing aurora. Aggregate cloud cover is held constant unless a timed weather forecast is available.

Generated 2026-10-12T20:14:08.283Z. Kp: fresh · observation 2026-10-12T18:00:00.000Z. Cloud: fresh · cache refresh 2026-10-12T19:45:43.022+00:00. Overall model: estimated.

Window: No suitable viewing window. A dash marks a missing input; zero means the model found no visibility under the supplied conditions.

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Oct 13

Kp Index •••
Probability •••
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Oct 14

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Oct 15

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About Aurora Viewing in Rio Grande

Rio Grande, Brazil, is at 32°S. Southern Lights are also called Aurora Australis. Its verified magnetic latitude is 26.1°S; Kp 7–9 is an approximate screening range, not a visibility probability. Sightings at this latitude are unusual and should not be expected on a typical night. Find a dark, open southern horizon and check the sky before travelling.

Follow forecasts, cloud maps and aurora alerts for Rio Grande in Aurora Hunt, then confirm darkness, local cloud and access before going outside.

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Frequently Asked Questions

Can you see the Southern Lights in Rio Grande?
Aurora Australis may be visible from Rio Grande when geomagnetic activity is strong, the sky is dark and clear, and the southern horizon is open. A Kp value near 7–9 is a useful guide for this location, not a guarantee.
What is the best season for the Southern Lights in Rio Grande?
The practical dark-sky season in Rio Grande runs from March through September, with the longest nights usually from May through August. Aurora can occur year-round whenever geomagnetic activity and darkness overlap.
Where should I look for Aurora Australis near Rio Grande?
Choose a dark site away from city lights with a wide, unobstructed view toward the southern horizon. Check cloud cover, moonlight and local access conditions before leaving.
What Kp index is needed in Rio Grande?
The Kp needed varies with magnetic latitude and storm geometry. Around Rio Grande, Kp 7–9 is a planning guide; the solar-wind direction, especially southward Bz, can change the actual result.
Do the equinoxes improve Southern Lights chances?
Geomagnetic activity can be more favorable around the March and September equinoxes, but there is no guaranteed equinox display. Darkness, clear skies and an active auroral oval must still coincide.

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