49ers vs. Seahawks Week 1 Showdown: Schedule, Viewing Guide, and Hype for Fans of Both Teams

August 25, 2025

SAN FRANCISCO, Calif. — Faithful and 12s, mark your calendars! The 2025 NFL season kicks off with a heated NFC West showdown as the San Francisco 49ers face the Seattle Seahawks in Week 1. And this isn’t just another division clash — it’s the first-ever NFL regular-season game held in South America, set to take place at Arena Corinthians in São Paulo, Brazil.

With Brock Purdy determined to lead the Niners back to the Super Bowl and Geno Smith out to prove Seattle’s rise is no fluke, this international opener promises fireworks. Here’s everything you need to know about the schedule, how to watch, and why both fanbases should be buzzing.

👉 Pro tip for 49ers fans: Even though the game is abroad, tailgate traditions never die — Levi’s Stadium watch parties and Bay Area bars will be rocking.
👉 For Seahawks fans: Expect CenturyLink (Lumen Field) vibes at local watch spots across Seattle as the 12s bring the noise.

How to Watch: Options for Fans Everywhere

Whether you’re tailgating in the Bay, cheering from Seattle, or tuning in worldwide, here’s how to catch every snap:

• TV Broadcast (U.S.): NBC (national) with Mike Tirico on play-by-play, Cris Collinsworth as analyst, and Melissa Stark on the sidelines. For local fans: KNTV (NBC Bay Area) in San Francisco and KING 5 (NBC Seattle).

Game Details and Schedule

• Date and Time: Thursday, September 5, 2025, at 8:15 p.m. ET (5:15 p.m. PT for West Coast fans).

Why This Game Matters:
For San Francisco, it’s about proving they’re still the NFC’s powerhouse after falling short in last year’s playoffs. Purdy enters with high expectations, backed by playmakers like Christian McCaffrey, Deebo Samuel, and George Kittle. For Seattle, it’s a chance for Geno Smith and young stars like Jaxon Smith-Njigba to challenge the Niners’ dominance and set the tone early in the NFC West race.

This international opener is more than football — it’s a statement game in one of the NFL’s fiercest rivalries.

Key Matchups and Hype for 49ers Fans

Faithful, get ready! The Niners’ defensive front — Nick Bosa, Javon Hargrave, and Dre Greenlaw — will look to overwhelm Seattle’s offensive line. On offense, watch for Purdy’s chemistry with McCaffrey and Aiyuk to exploit the Seahawks’ secondary. Remember last year’s 31-13 win over Seattle? Expect Kyle Shanahan to cook up more magic.

Key Matchups and Hype for Seahawks Fans

12s, your time is now! Geno Smith must stay clean against Bosa’s relentless pass rush. Look for Kenneth Walker III to test San Francisco’s run defense, while DK Metcalf vs. Charvarius Ward will be a must-watch battle on the outside. If Seattle’s defense — led by Bobby Wagner in his return season — can contain McCaffrey, the upset is in play.

What to Expect and Final Thoughts

This Brazil game is bigger than just points on the board — with concerts, fan zones, and a global broadcast, it’s a showcase for the NFL’s future.

For Niners fans, it’s about starting strong in their quest to return to the Super Bowl. For Seahawks fans, it’s about sending a message that they’re ready to reclaim NFC West glory.

📢 Don’t miss it — set reminders and join the conversation on X with #FTTB or #Seahawks.
So, who you got? The Niners striking first on their redemption tour, or the Seahawks crashing the party in Brazil?