Race-day weather · Wyndo for runners
Sydney Marathon weather
August 30, 2026 · Sydney, Australia · scheduled start 6:30 AM (Australia/Sydney). What the start usually feels like, year by year — and a live start-time read once the race is inside the 7-day forecast window.
Live read for the 6:30 AM start · August 30, 2026
The start-time read looks workable
Fair conditions for running — watch for visibility
- Visibility: Reduced visibility
- Forecast Horizon: This recommendation is ~24h out; forecast accuracy decreases over time.
Forecast checked at 6:26 AM (Australia/Sydney) — evaluating conditions around the scheduled 6:30 AM start at the start line, roughly the first half hour. It is not a whole-course or finish-line evaluation, and forecasts shift: re-check as race morning approaches.
Race-morning weather history
Late-winter Sydney ~8-15C at the 6:30 AM start. The pre-2025 September history over-represents warmer spring mornings than the current late-August slot, so it is shown as past-edition context, not a late-August forecast. 2020/2021 cancelled. Wyndo tracks what past editions of the race actually served up at the start hour — temperature, dew point, wind, and rain, and reads the live forecast for the start once race week arrives.
Median start temp
48°F
p75 (a warm year): 51°F
Median dew point
42°F
at the start hour
Rain at the start
0%
0 of 20 measured years
Warmest start
64°F
in 2005
Scroll sideways to see all columns.
| Year | Start temp | Dew point | Wind | Precip (start hr) | Day's high |
|---|---|---|---|---|---|
| 2025 | 40°F | 35°F | 4 mph | dry | 67°F |
| 2024 | 46°F | 32°F | 11 mph | dry | 61°F |
| 2023 | 52°F | 42°F | 5 mph | dry | 90°F |
| 2022 | 51°F | 42°F | 6 mph | dry | 72°F |
| 2019 | 43°F | 42°F | 5 mph | dry | 83°F |
| 2018 | 47°F | 26°F | 12 mph | dry | 62°F |
| 2017 | 38°F | 37°F | 4 mph | dry | 65°F |
| 2016 | 53°F | 50°F | 1 mph | dry | 60°F |
| 2015 | 50°F | 48°F | 4 mph | dry | 65°F |
| 2014 | 49°F | 45°F | 5 mph | dry | 67°F |
| 2013 | 44°F | 42°F | 4 mph | dry | 75°F |
| 2012 | 45°F | 44°F | 4 mph | dry | 69°F |
| 2011 | 59°F | 33°F | 9 mph | dry | 84°F |
| 2010 | 48°F | 42°F | 4 mph | dry | 64°F |
| 2009 | 49°F | 47°F | 4 mph | dry | 82°F |
| 2008 | 51°F | 49°F | 3 mph | dry | 74°F |
| 2007 | 44°F | 39°F | 5 mph | dry | 65°F |
| 2006 | 48°F | 47°F | 3 mph | dry | 71°F |
| 2005 | 64°F | 56°F | 11 mph | dry | 73°F |
| 2004 | 46°F | 30°F | 10 mph | dry | 61°F |
Each row is the weather at a real past edition's date and this race's current start hour (ERA5 reanalysis at the start line).Those editions ran in a different calendar slot than the upcoming one, so they're past-edition context — not a forecast for this year's date (see the note above).
Your heat-adjusted goal for the marathon
The same cited model as the full calculator, pointed at this race: the live forecast for the scheduled start hour.
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Race facts
- Start line
- Miller St, North Sydney, alongside St Leonards Park (Major-era course; the old Bradfield Park start is STALE); finish at the Opera House forecourt
- Scheduled start
- 6:30 AM (Australia/Sydney) — Official 2026: elite wheelchair 6:15, elites/mass from 6:30 (Group 1 6:31, Group 2 7:03, Group 3 7:41; rolling). Fine waves provisional until the 2026 event guide. Late Aug = AEST, no DST. 7th Abbott World Marathon Major (announced Nov 3, 2024).
- Field size
- ~32,964 runners (Major-era edition)
- Registration
- ballot (2026 ballot closed Oct 2025) + charity
Wyndo is not affiliated with or endorsed by the Sydney Marathon (officially the "TCS Sydney Marathon presented by ASICS") or its organizers. Race names are used descriptively to identify the event; schedules and start times belong to the race — always confirm details on the official site. Weather guidance here is informational, never medical advice, and event alert flags on race day belong to the race's own medical team.