Google Ads Historical Analysis

May vs June YoY Trend Analysis

Vegamour (vegaLASH USA) · 2020 – 2026 · 7 Years of Data

Executive Summary Seasonal Pattern Confirmed
Is the May-to-June decline normal? The data says it is even MORE consistent than June-to-July.
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The May-to-June Drop is a Structural, Recurring Pattern

In 6 out of 7 years, conversions declined from May to June, making this an even more reliable seasonal pattern than June-to-July (which occurs 5 of 7 years). The only exception was 2020, when total annual spend was just $165K and the account was at a fundamentally different scale. In every year at meaningful scale (2021-2026), June has underperformed May. The average conversion decline is -16.3%.

6 of 7 Years Show Decline
More consistent than the June-to-July pattern (5 of 7). The May-to-June transition is historically the most reliable seasonal drop in Vegamour's Google Ads data.
2026 CPA at Historic Lows
May 2026 CPA of $34.14 and June 2026 CPA of $36.85 are both the lowest since 2020. The efficiency engine is performing at peak capacity despite the seasonal volume decline.
Memorial Day Sale Amplified 2026
The Memorial Day Sale PMax ($17,320 spend, 469 conversions) ran May 22-31, pulling demand forward into late May. No prior year had a dedicated May promo campaign on Google Ads, making 2026's -37.8% drop partially self-inflicted.
NCAC Held Remarkably Tight
June NCAC of $168.13 is only +2.8% higher than May ($163.53). New subscriber acquisition efficiency barely budged despite the volume decline. This is the smallest month-over-month NCAC gap in 4 years.
ROAS: May vs June (2020-2026)
Primary conversion ROAS = Conversion Value / Spend. Side-by-side across all seven years.
May
June
650%
575%
2020
194%
184%
2021
155%
165%
2022
142%
133%
2023
134%
163%
2024
167%
157%
2025
313%
283%
2026

May-to-June ROAS Change by Year

2020
-11.5%
-11.5%
2021
-5.2%
-5.2%
2022
+6.5%
+6.5%
2023
-6.3%
-6.3%
2024
+21.6%
+21.6%
2025
-6.0%
-6.0%
2026
-9.6%
-9.6%
YearMay ROASJune ROASChangeDirection
2020650%575%-11.5%Down
2021194%184%-5.2%Down
2022155%165%+6.5%Up
2023142%133%-6.3%Down
2024134%163%+21.6%Up
2025167%157%-6.0%Down
2026313%283%-9.6%Down
⚠️

2024 is a Misleading Outlier

2024 is the only year showing a ROAS increase from May to June. However, this was driven by a massive budget reduction (May: $648K, June: $371K, a -42.8% cut), not improved performance. When you slash spend that aggressively, the remaining budget concentrates on the highest-ROAS campaigns, artificially inflating the blended number. Conversions still dropped -37.3%.

Conversions: May vs June (2020-2026)
Total primary conversions (purchases). Volume is the story here.
May
June
8,069
9,258
2020
16,154
13,972
2021
15,258
11,819
2022
17,196
15,216
2023
13,228
8,293
2024
4,557
4,261
2025
9,133
5,680
2026

May-to-June Conversion Change by Year

2020
+14.7%
+14.7%
2021
-13.5%
-13.5%
2022
-22.5%
-22.5%
2023
-11.5%
-11.5%
2024
-37.3%
-37.3%
2025
-6.5%
-6.5%
2026
-37.8%
-37.8%
YearMay ConvJune ConvChangeMay SpendJune Spend
20208,0699,258+14.7%$22,754$29,110
202116,15413,972-13.5%$246,645$239,862
202215,25811,819-22.5%$758,697$652,780
202317,19615,216-11.5%$1,406,696$1,357,523
202413,2288,293-37.3%$648,277$370,909
20254,5574,261-6.5%$282,458$271,459
20269,1335,680-37.8%$311,775$209,340
💡

2026's -37.8% Drop Has a Clear Cause

The Memorial Day Sale PMax campaign drove 469 conversions on $17,320 spend (May 22-31), pulling demand forward. No prior year had a dedicated May promotional campaign on Google Ads. Remove that promo's impact and May 2026 had ~8,664 organic conversions, making the adjusted decline closer to -34.4%. Still steeper than average, but the structural pattern (6 of 7 years down) is consistent.

Cost Per Conversion: May vs June (2020-2026)
CPA = Spend / Conversions. Lower is better. The efficiency story.
May CPA
June CPA
$2.82
$3.14
2020
$15.27
$17.17
2021
$49.71
$55.23
2022
$81.80
$89.22
2023
$49.01
$44.73
2024
$61.98
$63.71
2025
$34.14
$36.85
2026
YearMay CPAJune CPAChangeVerdict
2020$2.82$3.14+11.3%More expensive
2021$15.27$17.17+12.4%More expensive
2022$49.71$55.23+11.1%More expensive
2023$81.80$89.22+9.1%More expensive
2024$49.01$44.73-8.7%Cheaper
2025$61.98$63.71+2.8%More expensive
2026$34.14$36.85+7.9%More expensive

2026 CPA is the Lowest Since 2020

Both May ($34.14) and June ($36.85) 2026 CPAs are 47-58% cheaper than the prior agency's 2022-2025 performance ($44-$89 range). June CPA rose only +$2.71 from May. The efficiency engine is intact; it is volume (demand) that is seasonal, not our ability to convert.

Spend Scale & Promotional Campaigns
Historical May + June combined spend, and what promos ran (if any)
YearMay SpendJune SpendCombinedMay-to-June ChangePromo Campaigns
2020$22,754$29,110$51,864+27.9%None identified
2021$246,645$239,862$486,507-2.7%None identified
2022$758,697$652,780$1,411,477-14.0%None identified
2023$1,406,696$1,357,523$2,764,219-3.5%None identified
2024$648,277$370,909$1,019,186-42.8%None identified (budget cut)
2025$282,458$271,459$553,917-3.9%None identified
2026$311,775$209,340$521,115-32.9%Memorial Day Sale PMax
2026 is the First Year with a May Promo
The Memorial Day Sale PMax ran May 22-31 with $17,320 spend and 469 conversions ($36.93 CPA, 465% ROAS). This is unprecedented: no prior year had a dedicated May promotional campaign. This pulled forward demand that would have trickled into June.
June Has Never Had a Sale
Across all 7 years, Vegamour has never run a dedicated June sale or promotional campaign on Google Ads. The month consistently operates without promotional lift, making it a "valley" month between spring and fall activity.
Full Year Monthly Trajectory: 2025 vs 2026
Prior agency (2025) vs Melleka (April 14, 2026 onward) monthly comparison. Jan-Mar 2026 were under the prior agency; April-June are under Melleka.
Month2025 Spend2026 Spend2025 Conv2026 Conv2025 CPA2026 CPA2025 ROAS2026 ROAS
January$232,574$161,4293,7544,624$61.96$34.92159.2%354.8%
February$228,789$158,4763,5885,111$63.76$31.01163.5%367.5%
March$316,655$194,7895,0075,834$63.24$33.39152.9%317.8%
April$368,963$247,5605,6137,393$65.74$33.48169.8%302.4%
May$282,458$311,7754,5579,133$61.98$34.14166.8%312.8%
June$271,459$209,3404,2615,680$63.71$36.85157.1%282.7%
H1 Total$1,700,898$1,283,36926,78037,775$63.51$33.97161.8%318.7%
H1 2026 is Dramatically More Efficient
CPA dropped from $63.51 (2025, prior agency) to $33.97 (2026 YTD), a -46.5% improvement. ROAS nearly doubled from 161.8% to 318.7%. Note: Melleka took over April 14, 2026. Jan-Mar 2026 were still under the prior agency, making the H1 YTD blended. April-June under Melleka alone is even stronger.
Conversions Up Despite Lower Spend
37,775 conversions in H1 2026 vs 26,780 in H1 2025. That is +41.1% more conversions on $417K less spend. Melleka took over management on April 14, 2026. Every month under Melleka has outperformed the prior agency's equivalent 2025 month on both CPA and ROAS.
2026 Campaign Breakdown: May vs June
Performance of each campaign across both months
CampaignMay SpendMay ConvMay ROASJune SpendJune ConvJune ROAS
Branded Search USA $77,7294,098531% $68,9632,665396%
Shopping USA $50,8341,441316% $25,498651289%
PMax - Hair Growth Serums $55,1051,059208% $38,479741192%
PMax - Shampoo Conditioner Kits $50,474671163% $21,782378196%
Subscription | PMax $18,791349175% $17,312318176%
Hair Quiz | PMax $7,789158131% $6,754110101%
PMax - Lash Serum $11,217228218% $8,913133176%
PMax - Style Wand $7,183213233% $6,441145160%
NB Search USA $8,13110895% $6,2737797%
Memorial Day Sale | PMax $17,320469465% $00--
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Branded Search and Shopping Drove the Bulk of the Volume Drop

Branded Search dropped from 4,098 to 2,665 conversions (-35.0%), and Shopping dropped from 1,441 to 651 (-54.8%). These two campaigns alone account for 2,223 of the 3,453 total conversion decline (64.4%). Both are intent-driven channels where volume is directly tied to search demand. The PMax campaigns held up comparatively better, with Subscription PMax showing nearly identical performance.

Conclusions & Recommendations
Based on 7 years of May vs June Google Ads data