Premier League rain and goals

Rain does not measurably move Premier League scoring. Across 6,120 Premier League matches from 2010-11 to 2026-27, the 1,451 matches with any measurable kickoff-hour rain score +0.06 goals against dry matches from the same season (t = 1.15, well inside noise by our significance threshold). Wet matches went Over 2.5 goals 55.4% of the time against 53.3% for dry matches and a market-implied 53.3% (z = 1.61 against the closing odds). Only 37 matches had 2.5 mm or more of rain in the kickoff hour — under the 40-match minimum, so heavy rain is shown in the table but not quoted as a finding. Rainfall amount carries a gradient of about -0.04 goals per millimetre across wet matches — effectively flat.

The smaller figure in each cell is the gap with its test statistic: season-adjusted against the dry control in the goals and "vs dry" columns (t), and against the no-vig Over probability implied by each band's own closing odds in the last column (z). Roughly 2 is our threshold before we treat a gap as real; bands under 40 matches are greyed out and flagged, and nothing in a flagged row is quoted anywhere on this site. If bookmakers fully price the weather, a band's actual Over rate should sit on top of its market-implied rate. The "any measurable rain" row pools trace, steady and heavy matches; most wet matches are barely wet.

Scoring drifts across eras — the Premier League of the early 2010s is not the high-scoring league of recent seasons — which is exactly why every comparison above measures a match against its own season rather than against the pooled sample. The table also shows how much of each season was wet, so a rainy year cannot quietly drive the headline.

• Wet matches score the same as dry ones. Across 1,451 wet matches the season-adjusted gap is +0.06 goals (t = 1.15) — short of our significance threshold, so treated as noise. The steady-rain band (691 matches, 0.25–2.5 mm) says the same: +0.07 goals, t = 0.97.
• Heavy rain (37 matches) is below the 40-match minimum. Its Over 2.5 rate of 67.6% against a market-implied 51.6% (z = 1.96) is exactly the kind of row a minimum exists for. It is shown greyed out in the table, it carries no weight in anything on this site, and it will be re-read as the archive grows — the threshold was set before the numbers were seen, not adjusted to admit or exclude this row.
• A trace of rain is not information. The under-0.25 mm band (723 matches) scores +0.05 against the control (t = 0.76). A damp pitch graphic tells you nothing about the total.
• The market column keeps us honest. Wet matches were priced at 53.3% to go Over 2.5 by the closing odds and actually went Over 55.4% of the time — a gap of +2.1 points, z = 1.61. That gap is short of significance: on this evidence the closing odds already carry whatever rain is worth, which on the goals numbers is roughly nothing.

• Sample: 6,120 Premier League matches, 2010-11–2026-27, each with a final score and archived kickoff-hour weather at the stadium's own coordinates. 1,451 had measurable rain. Premier League grounds are open-air, so no roof exclusions are needed.
• Venue mapping: matches are credited to the stadium they were actually played at — Tottenham's Wembley seasons, West Ham's Upton Park years and Everton's Goodison Park years included — not to the club's current ground.
• Weather: hourly ERA5 reanalysis at the stadium coordinates in the kickoff hour. Reanalysis is archived model data, not a gauge reading at the ground, so small amounts carry more uncertainty than large ones.
• Control group: no measurable rain. Every figure is season-adjusted — each match against its own season's averages, for both goals and Over 2.5 rate.
• Odds: closing Over/Under 2.5 prices from the football-data.co.uk archive (market-average columns), de-vigged to an implied probability. The soccer totals line is essentially always 2.5 goals, so the market moves the price, not the line — the market column is the apples-to-apples benchmark. 6,120 matches carry odds.
• The 40-match minimum and the significance threshold are house rules applied to every study before results are seen, not thresholds chosen to admit a row.
• Not controlled: team quality, tactics, refereeing eras, wind arriving alongside the rain, and pitch drainage, which varies ground to ground.
• Kickoff-hour rain is a proxy for conditions across the match; a match that started dry and turned wet in the second half reads as dry here.

Data generated 2026-09-18. Numbers refresh as the archive tops up; corrections are dated and kept visible.