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The solar wind speed at Earth normally lies around 300km/sec but increases when a coronal hole high speed stream (CH HSS) or coronal mass ejection (CME) arrives. During a coronal mass ejection impact, the solar wind speed can jump suddenly to 500, or even more than 1000km/sec.
I calculate about four days. The slow solar wind which is the bulk of it, travels at about 400 km/s. The sun is about 149,000,000 km from earth, which works out to about 104â¦ hours. A coronal mass ejection, a massive burst of solar wind with consequences for radio and satellites, may reach earth 1-5 days after eruption.